“One man’s vulgarity is another’s lyric” is a line from Justice John Marshall Harlan II’s 1971 majority opinion in Cohen v. California, and it stands for the rule that the government cannot punish speech simply because the words are offensive. Harlan’s point was that no one can objectively separate a coarse word from an expressive one, so letting officials try would hand them a power to sanitize public debate that the First Amendment does not allow.
Where the Phrase Comes From
In 1968, Paul Robert Cohen walked through a Los Angeles courthouse corridor in a jacket reading “Fuck the Draft,” a protest against the Vietnam War. He was convicted under California Penal Code Section 415 for disturbing the peace through “offensive conduct” and sentenced to 30 days in jail.1Justia. Cohen v. California, 403 U.S. 15 (1971) California defended the conviction all the way to the Supreme Court, arguing it had a legitimate interest in keeping profanity out of government buildings.
The Court reversed, 5–4. Harlan wrote for the majority alongside Justices Douglas, Brennan, Stewart, and Marshall. The state had tried to frame the jacket as conduct rather than speech, which would have loosened the constitutional standard. Harlan rejected the framing: the only “conduct” being punished was the communicative content of the words themselves.1Justia. Cohen v. California, 403 U.S. 15 (1971)
What Harlan Actually Meant
The heart of the opinion is that words do two things at once. They carry ideas, and they carry the intensity of the speaker’s feeling about those ideas. Harlan wrote that “words are often chosen as much for their emotive as their cognitive force,” and that the Constitution protects both.2Legal Information Institute. Paul Robert Cohen, Appellant, v. State of California “I oppose the draft” communicates a position. “Fuck the Draft” communicates the position plus anger and moral urgency. Sanding off the profanity sands off part of the message.
From there, Harlan asked a practical question. If the government can ban some words as too vulgar, who decides which ones, and by what standard? He saw no principled way to draw that line. One person’s crude expression is another’s pointed lyric, and once officials start filtering, the filter tends to expand under the pretense of civility until it starts catching disfavored viewpoints. That is the sentence in context: not a celebration of profanity, but a recognition that any neutral rule about “offensive” words collapses on inspection.2Legal Information Institute. Paul Robert Cohen, Appellant, v. State of California
What the Principle Protects in Everyday Life
Applied outward from a single jacket, Harlan’s reasoning covers a broad range of ordinary situations. Police cannot arrest you for a profane bumper sticker. A city cannot ban protest signs because the words on them are coarse. A general political statement worn in public is protected even when passersby find it distasteful, because the remedy for encountering unwelcome speech in a public space is to look away, not to call an officer.1Justia. Cohen v. California, 403 U.S. 15 (1971)
The principle also reaches government programs that hand out benefits tied to speech. In Matal v. Tam (2017), the Supreme Court struck down the Lanham Act’s ban on registering trademarks that “disparage” people or groups, in a case brought by an Asian-American rock band called The Slants who chose the name to reclaim a slur. The Court held unanimously that “speech may not be banned on the ground that it expresses ideas that offend.”3Justia. Matal v. Tam, 582 U.S. ___ (2017) Two years later, Iancu v. Brunetti (2019) extended the same reasoning to the Act’s bar on “immoral or scandalous” marks.4Justia. Iancu v. Brunetti, 588 U.S. ___ (2019) The trademark office cannot approve names it finds wholesome while rejecting those it finds distasteful.
Public protest works the same way. Cities can enforce content-neutral rules about noise, permits, and where marches assemble. What they cannot do is apply those rules selectively based on whether officials approve of the message.5Congress.gov. Constitution Annotated – Content-Based vs. Content-Neutral Restrictions A profane anti-government sign and a polite pro-government sign have to be treated identically.6Legal Information Institute. First Amendment: Freedom of Speech
What the Principle Does Not Cover
Harlan’s rule is broad, but it is not unlimited. A few narrow categories of speech fall outside First Amendment protection, and confusing them with ordinary vulgarity is a common mistake.
Fighting Words
The Supreme Court’s 1942 decision in Chaplinsky v. New Hampshire recognized “fighting words,” those that by their nature tend to provoke an immediate violent reaction from the person they are aimed at.7Justia. Chaplinsky v. New Hampshire, 315 U.S. 568 (1942) California tried to squeeze Cohen’s jacket into this category and failed, because the jacket was a general political statement rather than a face-to-face insult targeted at a specific person. The Court has not upheld a fighting words conviction since Chaplinsky itself, so the exception is very narrow in practice.8Congress.gov. Constitution Annotated – Fighting Words
True Threats
Offensive speech is not the same as threatening speech. Federal law makes it a crime to transmit a threat to injure another person across state lines, punishable by up to five years in prison.9Office of the Law Revision Counsel. 18 U.S. Code 875 – Interstate Communications But a true threat has to communicate a serious intent to commit violence against an identifiable target. A furious rant, a shocking slogan, or obscenities yelled at a protest do not qualify.
Obscenity
Vulgarity and obscenity get confused constantly, and the law treats them very differently. Vulgar language enjoys full First Amendment protection. Obscenity does not, but the Supreme Court’s 1973 test in Miller v. California is deliberately hard to satisfy: the material has to appeal to a sexual interest under community standards, depict sexual conduct in a clearly offensive way under applicable law, and lack serious literary, artistic, political, or scientific value taken as a whole.10Justia. Miller v. California, 413 U.S. 15 (1973) Federal guidance confirms all three prongs must be met.11Department of Justice. Citizen’s Guide To U.S. Federal Law On Obscenity A four-letter word on a jacket is nowhere near the line, because obscenity law targets sexually explicit material, not rude language.
Public Schools
Schools operate under a different rule. In Bethel School District v. Fraser (1986), the Supreme Court held that public schools can discipline students for lewd or indecent speech at school events even when the speech is not legally obscene, because schools have a role in teaching appropriate behavior and the audience of minors is captive.12Justia. Bethel School District v. Fraser, 478 U.S. 675 (1986) That authority shrinks sharply off campus. In Mahanoy Area School District v. B.L. (2021), the Court ruled a school could not punish a cheerleader for a profane Snapchat post sent from a convenience store on a Saturday.13Justia. Mahanoy Area School District v. B. L., 594 U.S. ___ (2021)
Broadcast Radio and Television
Over-the-air broadcasting is the other main setting where indecent language faces restrictions. The FCC bars indecent and profane content on broadcast TV and radio between 6 a.m. and 10 p.m., the hours when children are likeliest to be listening.14Federal Communications Commission. Obscene, Indecent and Profane Broadcasts Cable, satellite, and streaming services fall outside those rules because subscribers choose to receive them.
Why the Tradeoff
Harlan was open about the cost of his rule. Protecting vulgar speech means tolerating language many people find genuinely unpleasant. What you get in return is that no official gets to decide which words are acceptable in public. Aesthetic and moral preferences shift with every election, and a government empowered to filter offensive language today is a government empowered to filter unpopular ideas tomorrow. That is the reason a Vietnam-era jacket in a courthouse corridor still shapes how American courts handle offensive speech more than fifty years later.