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NOTICE: This opinion is subject to formal revision before publication in the preliminary print of the United States Reports. Readers are requested to notify the Reporter of Decisions, Supreme Court of the United States, Washington, D. C. 20543, of any typographical or other formal errors, in order that corrections may be made before the preliminary print goes to press.

SUPREME COURT OF THE UNITED STATES

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No. 12–1168

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ELEANOR McCULLEN, et al., PETITIONERS v. MARTHA COAKLEY, ATTORNEY GEN-ERAL of MASSACHUSETTS, et al.

on writ of certiorari to the united states court of appeals for the first circuit

[June 26, 2014]

Chief Justice Roberts delivered the opinion of the Court.

A Massachusetts statute makes it a crime to knowingly stand on a “public way or sidewalk” within 35 feet of an entrance or driveway to any place, other than a hospital, where abortions are performed. Mass. Gen. Laws, ch. 266, §§120E½(a), (b) (West 2012). Petitioners are individuals who approach and talk to women outside such facilities, attempting to dissuade them from having abortions. The statute prevents petitioners from doing so near the facilities’ entrances. The question presented is whether the statute violates the First Amendment.

I

A

In 2000, the Massachusetts Legislature enacted the Massachusetts Reproductive Health Care Facilities Act, Mass. Gen. Laws, ch. 266, §120E½ (West 2000). The law was designed to address clashes between abortion opponents and advocates of abortion rights that were occurring outside clinics where abortions were performed. The Act established a defined area with an 18-foot radius around the entrances and driveways of such facilities. §120E½(b). Anyone could enter that area, but once within it, no one (other than certain exempt individuals) could knowingly approach within six feet of another person—unless that person consented—“for the purpose of passing a leaflet or handbill to, displaying a sign to, or engaging in oral protest, education, or counseling with such other person.” Ibid. A separate provision subjected to criminal punishment anyone who “knowingly obstructs, detains, hinders, impedes or blocks another person’s entry to or exit from a reproductive health care facility.” §120E½(e).

The statute was modeled on a similar Colorado law that this Court had upheld in Hill v. Colorado, 530 U. S. 703 (2000) . Relying on Hill, the United States Court of Appeals for the First Circuit sustained the Massachusetts statute against a First Amendment challenge. McGuire v. Reilly, 386 F. 3d 45 (2004) (McGuire II), cert. denied, 544 U. S. 974 (2005) ; McGuire v. Reilly, 260 F. 3d 36 (2001) (McGuire I).

By 2007, some Massachusetts legislators and law enforcement officials had come to regard the 2000 statute as inadequate. At legislative hearings, multiple witnesses recounted apparent violations of the law. Massachusetts Attorney General Martha Coakley, for example, testified that protestors violated the statute “on a routine basis.” App. 78. To illustrate this claim, she played a video depicting protestors approaching patients and clinic staff within the buffer zones, ostensibly without the latter individuals’ consent. Clinic employees and volunteers also testified that protestors congregated near the doors and in the driveways of the clinics, with the result that prospective patients occasionally retreated from the clinics rather than try to make their way to the clinic entrances or parking lots.

Captain William B. Evans of the Boston Police Department, however, testified that his officers had made “no more than five or so arrests” at the Planned Parenthood clinic in Boston and that what few prosecutions had been brought were unsuccessful. Id., at 68–69. Witnesses attributed the dearth of enforcement to the difficulty of policing the six-foot no-approach zones. Captain Evans testified that the 18-foot zones were so crowded with protestors that they resembled “a goalie’s crease,” making it hard to determine whether a protestor had deliberately approached a patient or, if so, whether the patient had consented. Id., at 69–71. For similar reasons, Attorney General Coakley concluded that the six-foot no-approach zones were “unenforceable.” Id., at 79. What the police needed, she said, was a fixed buffer zone around clinics that protestors could not enter. Id., at 74, 76. Captain Evans agreed, explaining that such a zone would “make our job so much easier.” Id., at 68.

To address these concerns, the Massachusetts Legislature amended the statute in 2007, replacing the six-foot no-approach zones (within the 18-foot area) with a 35-foot fixed buffer zone from which individuals are categorically excluded. The statute now provides:

“No person shall knowingly enter or remain on a public way or sidewalk adjacent to a reproductive health care facility within a radius of 35 feet of any portion of an entrance, exit or driveway of a reproductive health care facility or within the area within a rectangle created by extending the outside boundaries of any entrance, exit or driveway of a reproductive health care facility in straight lines to the point where such lines intersect the sideline of the street in front of such entrance, exit or driveway.” Mass. Gen. Laws, ch. 266, §120E½(b) (West 2012).

A “reproductive health care facility,” in turn, is defined as “a place, other than within or upon the grounds of a hospital, where abortions are offered or performed.” §120E½(a).

The 35-foot buffer zone applies only “during a facility’s business hours,” and the area must be “clearly marked and posted.” §120E½(c). In practice, facilities typically mark the zones with painted arcs and posted signs on adjacent sidewalks and streets. A first violation of the statute is punishable by a fine of up to $500, up to three months in prison, or both, while a subsequent offense is punishable by a fine of between $500 and $5,000, up to two and a half years in prison, or both. §120E½(d).

The Act exempts four classes of individuals: (1) “persons entering or leaving such facility”; (2) “employees or agents of such facility acting within the scope of their employment”; (3) “law enforcement, ambulance, firefighting, construction, utilities, public works and other municipal agents acting within the scope of their employment”; and (4) “persons using the public sidewalk or street right-of-way adjacent to such facility solely for the purposeof reaching a destination other than such facility.” §120E½(b)(1)–(4). The legislature also retained the separate provision from the 2000 version that proscribes the knowing obstruction of access to a facility. §120E½(e).

B

Some of the individuals who stand outside Massachusetts abortion clinics are fairly described as protestors, who express their moral or religious opposition to abortion through signs and chants or, in some cases, more aggressive methods such as face-to-face confrontation. Petitioners take a different tack. They attempt to engage women approaching the clinics in what they call “sidewalk counseling,” which involves offering information about alternatives to abortion and help pursuing those options. Petitioner Eleanor McCullen, for instance, will typically initiate a conversation this way: “Good morning, may I give you my literature? Is there anything I can do for you? I’m available if you have any questions.” App. 138. If the woman seems receptive, McCullen will provide additional information. McCullen and the other petitioners consider it essential to maintain a caring demeanor, a calm tone of voice, and direct eye contact during these exchanges. Such interactions, petitioners believe, are a much more effective means of dissuading women from having abortions than confrontational methods such as shouting or brandishing signs, which in petitioners’ view tend only to antagonize their intended audience. In unrefuted testimony, petitioners say they have collectively persuaded hundreds of women to forgo abortions.

The buffer zones have displaced petitioners from their previous positions outside the clinics. McCullen offers counseling outside a Planned Parenthood clinic in Boston, as do petitioners Jean Zarrella and Eric Cadin. Petitioner Gregory Smith prays the rosary there. The clinic occupies its own building on a street corner. Its main door is recessed into an open foyer, approximately 12 feet back from the public sidewalk. Before the Act was amended to create the buffer zones, petitioners stood near the entryway to the foyer. Now a buffer zone—marked by a painted arc and a sign—surrounds the entrance. This zone extends 23 feet down the sidewalk in one direction, 26 feet in the other, and outward just one foot short of the curb. The clinic’s entrance adds another seven feet to the width of the zone. Id., at 293–295. The upshot is that petitioners are effectively excluded from a 56-foot-wide expanse of the public sidewalk in front of the clinic.^[1]

Petitioners Mark Bashour and Nancy Clark offer counseling and information outside a Planned Parenthood clinic in Worcester. Unlike the Boston clinic, the Worcester clinic sits well back from the public street and sidewalks. Patients enter the clinic in one of two ways. Those arriving on foot turn off the public sidewalk and walk down a nearly 54-foot-long private walkway to the main entrance. More than 85% of patients, however, arrive by car, turning onto the clinic’s driveway from the street, parking in a private lot, and walking to the main entrance on a private walkway.

Bashour and Clark would like to stand where the private walkway or driveway intersects the sidewalk and offer leaflets to patients as they walk or drive by. But a painted arc extends from the private walkway 35 feet down the sidewalk in either direction and outward nearly to the curb on the opposite side of the street. Another arc surrounds the driveway’s entrance, covering more than 93 feet of the sidewalk (including the width of the driveway) and extending across the street and nearly six feet onto the sidewalk on the opposite side. Id., at 295–297. Bashour and Clark must now stand either some distance down the sidewalk from the private walkway and driveway or across the street.

Petitioner Cyril Shea stands outside a Planned Parenthood clinic in Springfield, which, like the Worcester clinic, is set back from the public streets. Approximately 90% of patients arrive by car and park in the private lots surrounding the clinic. Shea used to position himself at an entrance to one of the five driveways leading to the parking lots. Painted arcs now surround the entrances, each spanning approximately 100 feet of the sidewalk parallel to the street (again, including the width of the driveways) and extending outward well into the street. Id., at 297–299. Like petitioners at the Worcester clinic, Shea now stands far down the sidewalk from the driveway entrances.

Petitioners at all three clinics claim that the buffer zones have considerably hampered their counseling efforts. Although they have managed to conduct some counseling and to distribute some literature outside the buffer zones—particularly at the Boston clinic—they say they have had many fewer conversations and distributed many fewer leaflets since the zones went into effect. Id., at 136–137, 180, 200.

The second statutory exemption allows clinic employees and agents acting within the scope of their employment to enter the buffer zones. Relying on this exemption, the Boston clinic uses “escorts” to greet women as they approach the clinic, accompanying them through the zones to the clinic entrance. Petitioners claim that the escorts sometimes thwart petitioners’ attempts to communicate with patients by blocking petitioners from handing literature to patients, telling patients not to “pay any attention” or “listen to” petitioners, and disparaging petitioners as “crazy.” Id., at 165, 178.

C

In January 2008, petitioners sued Attorney General Coakley and other Commonwealth officials. They sought to enjoin enforcement of the Act, alleging that it violates the First and Fourteenth Amendments, both on its face and as applied to them. The District Court denied petitioners’ facial challenge after a bench trial based on a stipulated record. 573 F. Supp. 2d 382 (Mass. 2008).

The Court of Appeals for the First Circuit affirmed. 571 F. 3d 167 (2009). Relying extensively on its previous decisions upholding the 2000 version of the Act, see McGuire II, 386 F. 3d 45; McGuire I, 260 F. 3d 36, the court upheld the 2007 version as a reasonable “time, place, and manner” regulation under the test set forth in Ward v. Rock Against Racism, 491 U. S. 781 (1989) . 571 F. 3d, at 174–181. It also rejected petitioners’ arguments that the Act was substantially overbroad, void for vagueness, and an impermissible prior restraint. Id., at 181–184.

The case then returned to the District Court, which held that the First Circuit’s decision foreclosed all but one of petitioners’ as-applied challenges. 759 F. Supp. 2d 133 (2010). After another bench trial, it denied the remain-ing as-applied challenge, finding that the Act left petitioners ample alternative channels of communication. 844 F. Supp. 2d 206 (2012). The Court of Appeals once again affirmed. 708 F. 3d 1 (2013).

We granted certiorari. 570 U. S. ___ (2013).

II

By its very terms, the Massachusetts Act regulates access to “public way[s]” and “sidewalk[s].” Mass. Gen. Laws, ch. 266, §120E½(b) (Supp. 2007). Such areas occupy a “special position in terms of First Amendment protection” because of their historic role as sites for discussion and debate. United States v. Grace, 461 U. S. 171, 180 (1983) . These places—which we have labeled “traditional public fora”—“ ‘have immemorially been held in trust for the use of the public and, time out of mind, have been used for purposes of assembly, communicating thoughts between citizens, and discussing public questions.’ ” Pleasant Grove City v. Summum, 555 U. S. 460, 469 (2009) (quoting Perry Ed. Assn. v. Perry Local Educators’ Assn., 460 U. S. 37, 45 (1983) ).

It is no accident that public streets and sidewalks have developed as venues for the exchange of ideas. Even today, they remain one of the few places where a speaker can be confident that he is not simply preaching to the choir. With respect to other means of communication, an individual confronted with an uncomfortable message can always turn the page, change the channel, or leave the Web site. Not so on public streets and sidewalks. There, a listener often encounters speech he might otherwise tune out. In light of the First Amendment’s purpose “to preserve an uninhibited marketplace of ideas in which truth will ultimately prevail,” FCC v. League of Women Voters of Cal., 468 U. S. 364, 377 (1984) (internal quotation marks omitted), this aspect of traditional public fora is a virtue, not a vice.

In short, traditional public fora are areas that have historically been open to the public for speech activities. Thus, even though the Act says nothing about speech on its face, there is no doubt—and respondents do not dispute—that it restricts access to traditional public fora and is therefore subject to First Amendment scrutiny. See Brief for Respondents 26 (although “[b]y its terms, the Act regulates only conduct,” it “incidentally regulates the place and time of protected speech”).

Consistent with the traditionally open character of public streets and sidewalks, we have held that the government’s ability to restrict speech in such locations is “very limited.” Grace, supra, at 177. In particular, the guiding First Amendment principle that the “government has no power to restrict expression because of its message, its ideas, its subject matter, or its content” applies with full force in a traditional public forum. Police Dept. of Chicago v. Mosley, 408 U. S. 92, 95 (1972) . As a general rule, in such a forum the government may not “selectively . . . shield the public from some kinds of speech on the ground that they are more offensive than others.” Erznoznik v. Jacksonville, 422 U. S. 205, 209 (1975) .

We have, however, afforded the government somewhat wider leeway to regulate features of speech unrelated to its content. “[E]ven in a public forum the government may impose reasonable restrictions on the time, place, or manner of protected speech, provided the restrictions ‘are justified without reference to the content of the regulated speech, that they are narrowly tailored to serve a significant governmental interest, and that they leave open ample alternative channels for communication of the information.’ ” Ward, 491 U. S., at 791 (quoting Clark v. Community for Creative Non-Violence, 468 U. S. 288, 293 (1984) ).^[2]

While the parties agree that this test supplies theproper framework for assessing the constitutionality of the Massachusetts Act, they disagree about whether the Act satisfies the test’s three requirements.

III

Petitioners contend that the Act is not content neutral for two independent reasons: First, they argue that it discriminates against abortion-related speech because it establishes buffer zones only at clinics that perform abortions. Second, petitioners contend that the Act, by exempting clinic employees and agents, favors one viewpoint about abortion over the other. If either of these arguments is correct, then the Act must satisfy strict scrutiny—that is, it must be the least restrictive means of achieving a compelling state interest. See United States v. Playboy Entertainment Group, Inc., 529 U. S. 803, 813 (2000) . Respondents do not argue that the Act can survive this exacting standard.

Justice Scalia objects to our decision to consider whether the statute is content based and thus subject to strict scrutiny, given that we ultimately conclude that it is not narrowly tailored. Post, at 2 (opinion concurring in judgment). But we think it unexceptional to perform the first part of a multipart constitutional analysis first. The content-neutrality prong of the Ward test is logically antecedent to the narrow-tailoring prong, because it determines the appropriate level of scrutiny. It is not unusual for the Court to proceed sequentially in applying a constitutional test, even when the preliminary steps turn out not to be dispositive. See, e.g., Bartnicki v. Vopper, 532 U. S. 514 –527 (2001); Holder v. Humanitarian Law Project, 561 U. S. 1 –28 (2010) (concluding that a law was content based even though it ultimately survived strict scrutiny).

The Court does sometimes assume, without deciding, that a law is subject to a less stringent level of scrutiny, as we did earlier this Term in McCutcheon v. Federal Election Commission, 572 U. S. ___, ___ (2014) (plurality opinion) (slip op., at 10). But the distinction between that case and this one seems clear: Applying any standard of review other than intermediate scrutiny in McCutcheon—the standard that was assumed to apply—would have required overruling a precedent. There is no similar reason to forgo the ordinary order of operations in this case.

At the same time, there is good reason to address content neutrality. In discussing whether the Act is narrowly tailored, see Part IV, infra, we identify a number of less-restrictive alternative measures that the Massachusetts Legislature might have adopted. Some apply only at abortion clinics, which raises the question whether those provisions are content neutral. See infra, at 12–15. While we need not (and do not) endorse any of those measures, it would be odd to consider them as possible alternatives if they were presumptively unconstitutional because they were content based and thus subject to strict scrutiny.

A

The Act applies only at a “reproductive health care facility,” defined as “a place, other than within or upon the grounds of a hospital, where abortions are offered or performed.” Mass. Gen. Laws, ch. 266, §120E½(a). Given this definition, petitioners argue, “virtually all speech affected by the Act is speech concerning abortion,” thus rendering the Act content based. Brief for Petitioners 23.

We disagree. To begin, the Act does not draw content-based distinctions on its face. Contrast Boos v. Barry, 485 U. S. 312, 315 (1988) (ordinance prohibiting the display within 500 feet of a foreign embassy of any sign that tends to bring the foreign government into “ ‘public odium’ ” or “ ‘public disrepute’ ”); Carey v. Brown, 447 U. S. 455, 465 (1980) (statute prohibiting all residential picketing except “peaceful labor picketing”). The Act would be content based if it required “enforcement authorities” to “examine the content of the message that is conveyed to determine whether” a violation has occurred. League of Women Voters of Cal., supra, at 383. But it does not. Whether petitioners violate the Act “depends” not “on what they say,” Humanitarian Law Project, supra, at 27, but simply on where they say it. Indeed, petitioners can violate the Act merely by standing in a buffer zone, without displaying a sign or uttering a word.

It is true, of course, that by limiting the buffer zones to abortion clinics, the Act has the “inevitable effect” of restricting abortion-related speech more than speech on other subjects. Brief for Petitioners 24 (quoting United States v. O’Brien, 391 U. S. 367, 384 (1968) ). But a facially neutral law does not become content based simply be-cause it may disproportionately affect speech on certain topics. On the contrary, “[a] regulation that serves purposes unrelated to the content of expression is deemed neutral, even if it has an incidental effect on some speakers or messages but not others.” Ward, supra, at 791. The question in such a case is whether the law is “ ‘justified without reference to the content of the regulated speech.’ ” Renton v. Playtime Theatres, Inc., 475 U. S. 41, 48 (1986) (quoting Virginia Pharmacy Board v. Virginia Citizens Consumer Council, Inc., 425 U. S. 748, 771 (1976) ; emphasis deleted).

The Massachusetts Act is. Its stated purpose is to “increase forthwith public safety at reproductive health care facilities.” 2007 Mass. Acts p. 660. Respondents have articulated similar purposes before this Court—namely, “public safety, patient access to healthcare, and the unobstructed use of public sidewalks and roadways.” Brief for Respondents 27; see, e.g., App. 51 (testimony of Attorney General Coakley); id., at 67–70 (testimony of Captain William B. Evans of the Boston Police); id., at 79–80 (testimony of Mary Beth Heffernan, Undersecretary for Criminal Justice); id., at 122–124 (affidavit of Captain Evans). It is not the case that “[e]very objective indication shows that the provision’s primary purpose is to restrict speech that opposes abortion.” Post, at 7.

We have previously deemed the foregoing concerns to be content neutral. See Boos, 485 U. S., at 321 (identifying “congestion,” “interference with ingress or egress,” and “the need to protect . . . security” as content-neutral concerns). Obstructed access and congested sidewalks are problems no matter what caused them. A group of individuals can obstruct clinic access and clog sidewalks just as much when they loiter as when they protest abortion or counsel patients.

To be clear, the Act would not be content neutral if it were concerned with undesirable effects that arise from “the direct impact of speech on its audience” or “[l]isteners’ reactions to speech.” Ibid. If, for example, the speech outside Massachusetts abortion clinics caused offense or made listeners uncomfortable, such offense or discomfort would not give the Commonwealth a content-neutral justification to restrict the speech. All of the problems identified by the Commonwealth here, however, arise irrespective of any listener’s reactions. Whether or not a single person reacts to abortion protestors’ chants or petitioners’ counseling, large crowds outside abortion clinics can still compromise public safety, impede access, and obstruct sidewalks.

Petitioners do not really dispute that the Commonwealth’s interests in ensuring safety and preventing obstruction are, as a general matter, content neutral. But petitioners note that these interests “apply outside every building in the State that hosts any activity that might occasion protest or comment,” not just abortion clinics. Brief for Petitioners 24. By choosing to pursue these interests only at abortion clinics, petitioners argue, the Massachusetts Legislature evinced a purpose to “single[ ] out for regulation speech about one particular topic: abortion.” Reply Brief 9.

We cannot infer such a purpose from the Act’s limited scope. The broad reach of a statute can help confirm that it was not enacted to burden a narrower category of disfavored speech. See Kagan, Private Speech, Public Purpose: The Role of Governmental Motive in First Amendment Doctrine, 63 U. Chi. L. Rev. 413, 451–452 (1996). At the same time, however, “States adopt laws to address the problems that confront them. The First Amendment does not require States to regulate for problems that do not exist.” Burson v. Freeman, 504 U. S. 191, 207 (1992) (plurality opinion). The Massachusetts Legislature amended the Act in 2007 in response to a problem that was, in its experience, limited to abortion clinics. There was a record of crowding, obstruction, and even violence outside such clinics. There were apparently no similar recurring problems associated with other kinds of healthcare facilities, let alone with “every building in the State that hosts any activity that might occasion protest or comment.” Brief for Petitioners 24. In light of the limited nature of the problem, it was reasonable for the Massachusetts Legislature to enact a limited solution. When selecting among various options for combating a particular problem, legislatures should be encouraged to choose the one that restricts less speech, not more.

Justice Scalia objects that the statute does restrict more speech than necessary, because “only one [Massachusetts abortion clinic] is known to have been beset by the problems that the statute supposedly addresses.” Post, at 7. But there are no grounds for inferring content-based discrimination here simply because the legislature acted with respect to abortion facilities generally rather than proceeding on a facility-by-facility basis. On these facts, the poor fit noted by Justice Scalia goes to the question of narrow tailoring, which we consider below. See infra, at 26–28.

B

Petitioners also argue that the Act is content based because it exempts four classes of individuals, Mass. Gen. Laws, ch. 266, §§120E½(b)(1)–(4), one of which comprises “employees or agents of [a reproductive healthcare] facil-ity acting within the scope of their employment.” §120E½(b)(2). This exemption, petitioners say, favors one side in the abortion debate and thus constitutes viewpoint discrimination—an “egregious form of content discrimination,” Rosenberger v. Rector and Visitors of Univ. of Va., 515 U. S. 819, 829 (1995) . In particular, petitioners argue that the exemption allows clinic employees and agents—including the volunteers who “escort” patients arriving at the Boston clinic—to speak inside the buffer zones.

It is of course true that “an exemption from an otherwise permissible regulation of speech may represent a governmental ‘attempt to give one side of a debatable public question an advantage in expressing its views to the people.’ ” City of Ladue v. Gilleo, 512 U. S. 43, 51 (1994) (quoting First Nat. Bank of Boston v. Bellotti, 435 U. S. 765 –786 (1978)). At least on the record before us, however, the statutory exemption for clinic employees and agents acting within the scope of their employment does not appear to be such an attempt.

There is nothing inherently suspect about providing some kind of exemption to allow individuals who work at the clinics to enter or remain within the buffer zones. In particular, the exemption cannot be regarded as simply a carve-out for the clinic escorts; it also covers employees such as the maintenance worker shoveling a snowy sidewalk or the security guard patrolling a clinic entrance, see App. 95 (affidavit of Michael T. Baniukiewicz).

Given the need for an exemption for clinic employees, the “scope of their employment” qualification simply ensures that the exemption is limited to its purpose of allowing the employees to do their jobs. It performs the same function as the identical “scope of their employment” restriction on the exemption for “law enforcement, ambulance, fire-fighting, construction, utilities, public works and other municipal agents.” §120E½(b)(3). Contrary to the suggestion of Justice Scalia, post, at 11–12, there is little reason to suppose that the Massachusetts Legislature intended to incorporate a common law doctrine developed for determining vicarious liability in tort when it used the phrase “scope of their employment” for the wholly different purpose of defining the scope of an exemption to a criminal statute. The limitation instead makes clear—with respect to both clinic employees and municipal agents—that exempted individuals are allowed inside the zones only to perform those acts authorized by their employers. There is no suggestion in the record that any of the clinics authorize their employees to speak about abortion in the buffer zones. The “scope of their employment” limitation thus seems designed to protect against exactly the sort of conduct that petitioners and Justice Scalia fear.

Petitioners did testify in this litigation about instances in which escorts at the Boston clinic had expressed views about abortion to the women they were accompanying, thwarted petitioners’ attempts to speak and hand literature to the women, and disparaged petitioners in various ways. See App. 165, 168–169, 177–178, 189–190. It is unclear from petitioners’ testimony whether these alleged incidents occurred within the buffer zones. There is no viewpoint discrimination problem if the incidents occurred outside the zones because petitioners are equally free to say whatever they would like in that area.

Even assuming the incidents occurred inside the zones, the record does not suggest that they involved speech within the scope of the escorts’ employment. If the speech was beyond the scope of their employment, then each of the alleged incidents would violate the Act’s express terms. Petitioners’ complaint would then be that the police were failing to enforce the Act equally against clinic escorts. Cf. Hoye v. City of Oakland, 653 F. 3d 835, 849–852 (CA9 2011) (finding selective enforcement of a similar ordinance in Oakland, California). While such allegations might state a claim of official viewpoint discrimination, that would not go to the validity of the Act. In any event, petitioners nowhere allege selective enforcement.

It would be a very different question if it turned out that a clinic authorized escorts to speak about abortion inside the buffer zones. See post, at 1–2 (Alito, J., concurring in judgment). In that case, the escorts would not seem to be violating the Act because the speech would be within the scope of their employment.^[3] The Act’s exemption for clinic employees would then facilitate speech on only one side of the abortion debate—a clear form of viewpoint discrimination that would support an as-applied challenge to the buffer zone at that clinic. But the record before us contains insufficient evidence to show that the exemption operates in this way at any of the clinics, perhaps because the clinics do not want to doom the Act by allowing their employees to speak about abortion within the buffer zones.^[4]

We thus conclude that the Act is neither content nor viewpoint based and therefore need not be analyzed under strict scrutiny.

IV

Even though the Act is content neutral, it still must be “narrowly tailored to serve a significant governmental interest.” Ward, 491 U. S., at 796 (internal quotation marks omitted). The tailoring requirement does not sim-ply guard against an impermissible desire to censor. The government may attempt to suppress speech not only because it disagrees with the message being expressed, but also for mere convenience. Where certain speech is associated with particular problems, silencing the speech is sometimes the path of least resistance. But by demanding a close fit between ends and means, the tailoring requirement prevents the government from too readily “sacrific[ing] speech for efficiency.” Riley v. National Federation of Blind of N. C., Inc., 487 U. S. 781, 795 (1988) .

For a content-neutral time, place, or manner regulation to be narrowly tailored, it must not “burden substantially more speech than is necessary to further the government’s legitimate interests.” Ward, 491 U. S., at 799. Such a regulation, unlike a content-based restriction of speech, “need not be the least restrictive or least intrusive means of” serving the government’s interests. Id., at 798. But the government still “may not regulate expression in such a manner that a substantial portion of the burden on speech does not serve to advance its goals.” Id., at 799.

A

As noted, respondents claim that the Act promotes “public safety, patient access to healthcare, and the unobstructed use of public sidewalks and roadways.” Brief for Respondents 27. Petitioners do not dispute the significance of these interests. We have, moreover, previously recognized the legitimacy of the government’s interests in “ensuring public safety and order, promoting the free flow of traffic on streets and sidewalks, protecting property rights, and protecting a woman’s freedom to seek pregnancy-related services.” Schenck v. Pro-Choice Network of Western N. Y., 519 U. S. 357, 376 (1997) . See also Madsen v. Women’s Health Center, Inc., 512 U. S. 753 –768 (1994). The buffer zones clearly serve these interests.

At the same time, the buffer zones impose serious burdens on petitioners’ speech. At each of the three Planned Parenthood clinics where petitioners attempt to counsel patients, the zones carve out a significant portion of the adjacent public sidewalks, pushing petitioners well back from the clinics’ entrances and driveways. The zones thereby compromise petitioners’ ability to initiate the close, personal conversations that they view as essential to “sidewalk counseling.”

For example, in uncontradicted testimony, McCullen explained that she often cannot distinguish patients from passersby outside the Boston clinic in time to initiate a conversation before they enter the buffer zone. App. 135. And even when she does manage to begin a discussion outside the zone, she must stop abruptly at its painted border, which she believes causes her to appear “untrustworthy” or “suspicious.” Id., at 135, 152. Given these limitations, McCullen is often reduced to raising her voice at patients from outside the zone—a mode of communication sharply at odds with the compassionate message she wishes to convey. Id., at 133, 152–153. Clark gave similar testimony about her experience at the Worcester clinic. Id., at 243–244.

These burdens on petitioners’ speech have clearly taken their toll. Although McCullen claims that she has persuaded about 80 women not to terminate their pregnancies since the 2007 amendment, App. to Pet. for Cert. 42a, she also says that she reaches “far fewer people” than she did before the amendment, App. 137. Zarrella reports an even more precipitous decline in her success rate: She estimated having about 100 successful interactions over the years before the 2007 amendment, but not a single one since. Id., at 180. And as for the Worcester clinic, Clark testified that “only one woman out of 100 will make the effort to walk across [the street] to speak with [her].” Id., at 217.

The buffer zones have also made it substantially more difficult for petitioners to distribute literature to arriving patients. As explained, because petitioners in Boston cannot readily identify patients before they enter the zone, they often cannot approach them in time to place literature near their hands—the most effective means of getting the patients to accept it. Id., at 179. In Worcester and Springfield, the zones have pushed petitioners so far back from the clinics’ driveways that they can no longer even attempt to offer literature as drivers turn into the parking lots. Id., at 213, 218, 252–253. In short, the Act operates to deprive petitioners of their two primary methods of communicating with patients.

The Court of Appeals and respondents are wrong to downplay these burdens on petitioners’ speech. As the Court of Appeals saw it, the Constitution does not accord “special protection” to close conversations or “handbilling.” 571 F. 3d, at 180. But while the First Amendment does not guarantee a speaker the right to any particular form of expression, some forms—such as normal conversation and leafletting on a public sidewalk—have historically been more closely associated with the transmission of ideas than others.

In the context of petition campaigns, we have observed that “one-on-one communication” is “the most effective, fundamental, and perhaps economical avenue of political discourse.” Meyer v. Grant, 486 U. S. 414, 424 (1988) . See also Schenck, supra, at 377 (invalidating a “floating” buffer zone around people entering an abortion clinic partly on the ground that it prevented protestors “from communicating a message from a normal conversational distance or handing leaflets to people entering or leaving the clinics who are walking on the public sidewalks”). And “handing out leaflets in the advocacy of a politically controversial viewpoint . . . is the essence of First Amendment expression”; “[n]o form of speech is entitled to greater constitutional protection.” McIntyre v. Ohio Elections Comm’n, 514 U. S. 334, 347 (1995) . See also Schenck, supra, at 377 (“Leafletting and commenting on matters of public concern are classic forms of speech that lie at the heart of the First Amendment”). When the government makes it more difficult to engage in these modes of communication, it imposes an especially significant First Amendment burden.^[5]

Respondents also emphasize that the Act does not prevent petitioners from engaging in various forms of “protest”—such as chanting slogans and displaying signs—outside the buffer zones. Brief for Respondents 50–54. That misses the point. Petitioners are not protestors. They seek not merely to express their opposition to abortion, but to inform women of various alternatives and to provide help in pursuing them. Petitioners believe that they can accomplish this objective only through personal, caring, consensual conversations. And for good reason: It is easier to ignore a strained voice or a waving hand than a direct greeting or an outstretched arm. While the record indicates that petitioners have been able to have a number of quiet conversations outside the buffer zones, respondents have not refuted petitioners’ testimony that the conversations have been far less frequent and far less successful since the buffer zones were instituted. It is thus no answer to say that petitioners can still be “seen and heard” by women within the buffer zones. Id., at 51–53. If all that the women can see and hear are vociferous opponents of abortion, then the buffer zones have effectively stifled petitioners’ message.

Finally, respondents suggest that, at the Worcester and Springfield clinics, petitioners are prevented from communicating with patients not by the buffer zones but by the fact that most patients arrive by car and park in the clinics’ private lots. Id., at 52. It is true that the layout of the two clinics would prevent petitioners from approaching the clinics’ doorways, even without the buffer zones. But petitioners do not claim a right to trespass on the clinics’ property. They instead claim a right to stand on the public sidewalks by the driveway as cars turn into the parking lot. Before the buffer zones, they could do so. Now they must stand a substantial distance away. The Act alone is responsible for that restriction on their ability to convey their message.

B

1

The buffer zones burden substantially more speech than necessary to achieve the Commonwealth’s asserted interests. At the outset, we note that the Act is truly exceptional: Respondents and their amici identify no other State with a law that creates fixed buffer zones around abortion clinics.^[6] That of course does not mean that the law is invalid. It does, however, raise concern that the Commonwealth has too readily forgone options that could serve its interests just as well, without substantially burdening the kind of speech in which petitioners wish to engage.

That is the case here. The Commonwealth’s interests include ensuring public safety outside abortion clinics, preventing harassment and intimidation of patients and clinic staff, and combating deliberate obstruction of clinic entrances. The Act itself contains a separate provision, subsection (e)—unchallenged by petitioners—that prohibits much of this conduct. That provision subjects to criminal punishment “[a]ny person who knowingly obstructs, detains, hinders, impedes or blocks another person’s entry to or exit from a reproductive health care facility.” Mass. Gen. Laws, ch. 266, §120E½(e).^[7] If Massachusetts determines that broader prohibitions along the same lines are necessary, it could enact legislation similar to the federal Freedom of Access to Clinic Entrances Act of 1994 (FACE Act), 18 U. S. C. §248(a)(1), which subjects to both criminal and civil penalties anyone who “by force or threat of force or by physical obstruction, intentionally injures, intimidates or interferes with or attempts to injure, intimidate or interfere with any person because that person is or has been, or in order to intimidate such person or any other person or any class of persons from, obtaining or providing reproductive health services.” Some dozen other States have done so. See Brief for State of New York et al. as Amici Curiae 13, and n. 6. If the Commonwealth is particularly concerned about harassment, it could also consider an ordinance such as the one adopted in New York City that not only prohibits obstructing access to a clinic, but also makes it a crime “to follow and harass another person within 15 feet of the premises of a reproductive health care facility.” N. Y. C. Admin. Code §8–803(a)(3) (2014).^[8]

The Commonwealth points to a substantial public safety risk created when protestors obstruct driveways leading to the clinics. See App. 18, 41, 51, 88–89, 99, 118–119. That is, however, an example of its failure to look to less intrusive means of addressing its concerns. Any such obstruction can readily be addressed through existing local ordinances. See, e.g., Worcester, Mass., Revised Ordinances of 2008, ch. 12, §25(b) (“No person shall stand, or place any obstruction of any kind, upon any street, sidewalk or crosswalk in such a manner as to obstruct a free passage for travelers thereon”); Boston, Mass., Municipal Code, ch. 16–41.2(d) (2013) (“No person shall solicit while walking on, standing on or going into any street or highway used for motor vehicle travel, or any area appurtenant thereto (including medians, shoulder areas, bicycle lanes, ramps and exit ramps)”).

All of the foregoing measures are, of course, in addition to available generic criminal statutes forbidding assault, breach of the peace, trespass, vandalism, and the like.

In addition, subsection (e) of the Act, the FACE Act, and the New York City anti-harassment ordinance are all enforceable not only through criminal prosecutions but also through public and private civil actions for injunctions and other equitable relief. See Mass. Gen. Laws §120E½(f); 18 U. S. C. §248(c)(1); N. Y. C. Admin. Code §§8–804, 8–805. We have previously noted the First Amendment virtues of targeted injunctions as alternatives to broad, prophylactic measures. Such an injunction “regulates the activities, and perhaps the speech, of a group,” but only “because of the group’s past actions in the context of a specific dispute between real parties.” Madsen, 512 U. S., at 762 (emphasis added). Moreover, given the equitable nature of injunctive relief, courts can tailor a remedy to ensure that it restricts no more speech than necessary. See, e.g., id., at 770; Schenck, 519 U. S., at 380–381. In short, injunctive relief focuses on the precise individuals and the precise conduct causing a particular problem. The Act, by contrast, categorically excludes non-exempt individuals from the buffer zones, unnecessarily sweeping in innocent individuals and their speech.

The Commonwealth also asserts an interest in preventing congestion in front of abortion clinics. According to respondents, even when individuals do not deliberately obstruct access to clinics, they can inadvertently do so simply by gathering in large numbers. But the Commonwealth could address that problem through more targeted means. Some localities, for example, have ordinances that require crowds blocking a clinic entrance to disperse when ordered to do so by the police, and that forbid the individuals to reassemble within a certain distance of the clinic for a certain period. See Brief for State of New York et al. as Amici Curiae 14–15, and n. 10. We upheld a similar law forbidding three or more people “ ‘to congregate within 500 feet of [a foreign embassy], and refuse to disperse after having been ordered so to do by the police,’ ” Boos, 485 U. S., at 316 (quoting D. C. Code §22–1115 (1938))—an order the police could give only when they “ ‘reasonably believe[d] that a threat to the security or peace of the embassy [was] present,’ ” 485 U. S., at 330 (quoting Finzer v. Barry, 798 F. 2d 1450, 1471 (CADC 1986)).

And to the extent the Commonwealth argues that even these types of laws are ineffective, it has another problem. The portions of the record that respondents cite to support the anticongestion interest pertain mainly to one place at one time: the Boston Planned Parenthood clinic on Saturday mornings. App. 69–71, 88–89, 96, 123. Respondents point us to no evidence that individuals regularly gather at other clinics, or at other times in Boston, in sufficiently large groups to obstruct access. For a problem shown to arise only once a week in one city at one clinic, creating 35-foot buffer zones at every clinic across the Commonwealth is hardly a narrowly tailored solution.

The point is not that Massachusetts must enact all or even any of the proposed measures discussed above. The point is instead that the Commonwealth has available to it a variety of approaches that appear capable of serving its interests, without excluding individuals from areas historically open for speech and debate.

2

Respondents have but one reply: “We have tried other approaches, but they do not work.” Respondents emphasize the history in Massachusetts of obstruction at abortion clinics, and the Commonwealth’s allegedly failed attempts to combat such obstruction with injunctions and individual prosecutions. They also point to the Commonwealth’s experience under the 2000 version of the Act, during which the police found it difficult to enforce the six-foot no-approach zones given the “frenetic” activity in front of clinic entrances. Brief for Respondents 43. According to respondents, this history shows that Massachusetts has tried less restrictive alternatives to the buffer zones, to no avail.

We cannot accept that contention. Although respondents claim that Massachusetts “tried other laws already on the books,” id., at 41, they identify not a single prosecution brought under those laws within at least the last 17 years. And while they also claim that the Commonwealth “tried injunctions,” ibid., the last injunctions they cite date to the 1990s, see id., at 42 (citing Planned Parenthood League of Mass., Inc. v. Bell, 424 Mass. 573, 677 N. E. 2d 204 (1997); Planned Parenthood League of Mass., Inc. v. Operation Rescue, 406 Mass. 701, 550 N. E. 2d 1361 (1990)). In short, the Commonwealth has not shown that it seriously undertook to address the problem with less intrusive tools readily available to it. Nor has it shown that it considered different methods that other jurisdictions have found effective.

Respondents contend that the alternatives we have discussed suffer from two defects: First, given the “widespread” nature of the problem, it is simply not “practicable” to rely on individual prosecutions and injunctions. Brief for Respondents 45. But far from being “widespread,” the problem appears from the record to be limited principally to the Boston clinic on Saturday mornings. Moreover, by their own account, the police appear per-fectly capable of singling out lawbreakers. The legislative testimony preceding the 2007 Act revealed substantial police and video monitoring at the clinics, especially when large gatherings were anticipated. Captain Evans testified that his officers are so familiar with the scene outside the Boston clinic that they “know all the players down there.” App. 69. And Attorney General Coakley relied on video surveillance to show legislators conduct she thought was “clearly against the law.” Id., at 78. If Commonwealth officials can compile an extensive record of obstruction and harassment to support their preferred legislation, we do not see why they cannot do the same to support injunctions and prosecutions against those who might deliberately flout the law.

The second supposed defect in the alternatives we have identified is that laws like subsection (e) of the Act and the federal FACE Act require a showing of intentional or deliberate obstruction, intimidation, or harassment, which is often difficult to prove. Brief for Respondents 45–47. As Captain Evans predicted in his legislative testimony, fixed buffer zones would “make our job so much easier.” App. 68.

Of course they would. But that is not enough to satisfy the First Amendment. To meet the requirement of narrow tailoring, the government must demonstrate that alternative measures that burden substantially less speech would fail to achieve the government’s interests, not simply that the chosen route is easier. A painted line on the sidewalk is easy to enforce, but the prime objective of the First Amendment is not efficiency. In any case, we do not think that showing intentional obstruction is nearly so difficult in this context as respondents suggest. To determine whether a protestor intends to block access to a clinic, a police officer need only order him to move. If he refuses, then there is no question that his continued conduct is knowing or intentional.

For similar reasons, respondents’ reliance on our decision in Burson v. Freeman is misplaced. There, we upheld a state statute that established 100-foot buffer zones outside polling places on election day within which no one could display or distribute campaign materials or solicit votes. 504 U. S., at 193–194. We approved the buffer zones as a valid prophylactic measure, noting that existing “[i]ntimidation and interference laws fall short of serving a State’s compelling interests because they ‘deal with only the most blatant and specific attempts’ to impede elections.” Id., at 206–207 (quoting Buckley v. Valeo, 424 U. S. 1, 28 (1976) (per curiam)). Such laws were insufficient because “[v]oter intimidation and election fraud are . . . difficult to detect.” Burson, 504 U. S., at 208. Obstruction of abortion clinics and harassment of patients, by contrast, are anything but subtle.

We also noted in Burson that under state law, “law enforcement officers generally are barred from the vicinity of the polls to avoid any appearance of coercion in the electoral process,” with the result that “many acts of interference would go undetected.” Id., at 207. Not so here. Again, the police maintain a significant presence outside Massachusetts abortion clinics. The buffer zones in Burson were justified because less restrictive measures were inadequate. Respondents have not shown that to be the case here.

Given the vital First Amendment interests at stake, it is not enough for Massachusetts simply to say that other approaches have not worked.^[9]

* �ă* �ă*

Petitioners wish to converse with their fellow citizens about an important subject on the public streets and sidewalks—sites that have hosted discussions about the issues of the day throughout history. Respondents assert undeniably significant interests in maintaining public safety on those same streets and sidewalks, as well as in preserving access to adjacent healthcare facilities. But here the Commonwealth has pursued those interests by the extreme step of closing a substantial portion of a traditional public forum to all speakers. It has done so without seriously addressing the problem through alternatives that leave the forum open for its time-honored purposes. The Commonwealth may not do that consistent with the First Amendment.

The judgment of the Court of Appeals for the First Circuit is reversed, and the case is remanded for further proceedings consistent with this opinion.

It is so ordered.

Notes

[1]  The zone could have extended an additional 21 feet in width under the Act. Only the smaller area was marked off, however, so only that area has legal effect. See Mass. Gen. Laws, ch. 266, §120E½(c).

[2]  A different analysis would of course be required if the government property at issue were not a traditional public forum but instead “a forum that is limited to use by certain groups or dedicated solely to the discussion of certain subjects.” v. , .

[3]  Less than two weeks after the instant litigation was initiated, the Massachusetts Attorney General’s Office issued a guidance letter clarifying the application of the four exemptions. The letter interpreted the exemptions as not permitting clinic employees or agents, municipal employees or agents, or individuals passing by clinics “to express their views about abortion or to engage in any other partisan speech within the buffer zone.” App. 93, 93–94. While this interpretation supports our conclusion that the employee exemption does not render the Act viewpoint based, we do not consider it in our analysis because it appears to the scope of the Act—a criminal statute—rather than to adopt a “ ‘limiting construction.’ ” v. , (quoting v. , , n. 5 (1982)).

[4]  Of course we do not hold that “[s]peech restrictions favoring one viewpoint over another are not content based unless it can be shown that the favored viewpoint has actually been expressed.” ,at 13. We instead apply an uncontroversial principle of constitutional adjudication: that a plaintiff generally cannot prevail on an challenge without showing that the law has in fact been (or is sufficiently likely to be) unconstitutionally to him. Specifically, when someone challenges a law as viewpoint discriminatory but it is not clear from the face of the law which speakers will be allowed to speak, he must show that he was prevented from speaking while someone espousing another viewpoint was permitted to do so. can decry this analysis as “astonishing” only by quoting a sentence that is explicitly limited to as-applied challenges and treating it as relevant to facial challenges.

[5]  As a leading historian has noted:

[6]   do identify five localities with laws similar to the Act here. Brief for State of New York et al. as 14, n. 7.

[7]  Massachusetts also has a separate law prohibiting similar kinds of conduct at any “medical facility,” though that law, unlike the Act, requires explicit notice before any penalty may be imposed. Mass. Gen. Laws, ch. 266, §120E.

[8]  We do not “give [our] approval” to this or any of the other alternatives we discuss. ,at 4. We merely suggest that a law like the New York City ordinance could in principle constitute a permissible alternative. Whether such a law would pass constitutional muster would depend on a number of other factors, such as whether the term “harassment” had been authoritatively construed to avoid vagueness and overbreadth problems of the sort noted by .

[9]  Because we find that the Act is not narrowly tailored, we need not consider whether the Act leaves open ample alternative channels of communication. Nor need we consider petitioners’ overbreadth challenge.