Brandenburg v. Ohio, 395 U.S. 444 (1969), is the Supreme Court decision that sets the modern rule for when the government can punish inflammatory speech. The Court struck down Ohio’s Criminal Syndicalism Act and held that the First Amendment protects advocacy of force or lawbreaking unless the speech is both directed at inciting imminent lawless action and likely to actually produce it. That two-part rule, known as the imminent lawless action test, has controlled political incitement cases for more than fifty years.
What Happened in the Case
In 1964, Clarence Brandenburg, a leader of a Ku Klux Klan group in Hamilton County, Ohio, invited a television news crew to film a rally. The footage showed participants in robes and hoods, some carrying firearms, gathered around a burning cross. Brandenburg’s speeches, later broadcast on local and national news, included derogatory language aimed at racial and religious groups. He suggested that “revengeance” might be taken if the government continued to suppress the white race, and he announced planned marches on Washington, D.C., and Jackson, Mississippi.
Local prosecutors treated the broadcast as their primary evidence. Brandenburg was charged, convicted, fined $1,000, and sentenced to one to ten years in prison. An intermediate appellate court affirmed, and the Ohio Supreme Court declined to hear the case.
The Ohio Law at Issue
Ohio’s Criminal Syndicalism Act, enacted in 1919, made it a crime to advocate violence or terrorism as a means of achieving political or industrial reform. It also punished anyone who voluntarily assembled with a group formed to teach or promote those ideas. Under the statute, expressing the views or belonging to such a group was itself enough for a conviction. The law targeted beliefs and words rather than actions, sweeping in a wide range of political speech that never came close to producing actual harm.
The Supreme Court’s Ruling
The Supreme Court reversed Brandenburg’s conviction on June 9, 1969, in a per curiam opinion issued in the name of the whole Court rather than a single justice.1Legal Information Institute. Per Curiam It declared the Ohio statute unconstitutional and explicitly overruled Whitney v. California (1927), which had upheld a similar criminal syndicalism conviction under a permissive “bad tendency” standard.2Supreme Court of the United States. 395 U.S. 444 – Brandenburg v. Ohio
The heart of the ruling came in a single sentence: “the constitutional guarantees of free speech and free press do not permit a State to forbid or proscribe advocacy of the use of force or of law violation except where such advocacy is directed to inciting or producing imminent lawless action and is likely to incite or produce such action.”3Justia. Brandenburg v. Ohio Ohio’s statute failed that standard because it punished “mere advocacy” with no requirement that the speech actually be likely to spark immediate violence.
The Court drew a deliberate line between teaching an idea and inciting an act, quoting an earlier decision: “the mere abstract teaching of the moral propriety or even moral necessity for a resort to force and violence is not the same as preparing a group for violent action and steeling it to such action.” A statute that fails to draw that distinction, the Court held, “sweeps within its condemnation speech which our Constitution has immunized from governmental control.”3Justia. Brandenburg v. Ohio
Justice Douglas concurred separately, arguing that the older “clear and present danger” test should have no place in First Amendment analysis at all. He drew the line at “ideas and overt acts.” Justice Black joined the opinion and endorsed that view.
The Imminent Lawless Action Test
The rule has two requirements, and the government must prove both. If either is missing, the speech is protected.
First, the speech must be directed at producing imminent lawless action. The speaker has to be pushing the audience toward breaking the law right now, not at some vague future point. General predictions of conflict, philosophical arguments for revolution, and abstract endorsements of violence all fall short. The word “imminent” does real work: a speech calling for “action someday” does not qualify.2Supreme Court of the United States. 395 U.S. 444 – Brandenburg v. Ohio
Second, the speech must be likely to incite or produce that action. Even if the speaker intends to provoke immediate lawbreaking, the speech has to be objectively capable of doing so. Context matters. A person ranting on a street corner to indifferent passersby is in a different position from someone addressing an armed, agitated crowd, and courts weigh the surrounding circumstances to gauge whether violence was genuinely probable.3Justia. Brandenburg v. Ohio
Some commentators describe Brandenburg as a three-part test by separating intent, imminence, and likelihood into distinct elements. The Court’s own language folds these into two clauses joined by “and.” However you count the prongs, the functional point is the same: the government must show the speaker meant to cause immediate lawbreaking and that the speech was actually capable of doing so.
How Courts Have Applied Brandenburg
Two later Supreme Court cases show just how demanding the test is.
Hess v. Indiana (1973)
During an antiwar protest at Indiana University, police were clearing demonstrators from a street. Gregory Hess was arrested after shouting, “We’ll take the fucking street later.” Indiana convicted him of disorderly conduct. The Supreme Court reversed, holding that his words at best counseled present moderation and at worst were “nothing more than advocacy of illegal action at some indefinite future time.” With no evidence the words were intended or likely to produce “imminent disorder,” the conviction could not stand.4Justia. Hess v. Indiana Even during an active confrontation with police, the speech did not qualify.
NAACP v. Claiborne Hardware Co. (1982)
During a civil rights boycott in Mississippi, Charles Evers gave charged speeches warning that anyone who violated the boycott would be “disciplined.” Some acts of violence did occur, but weeks or months later. The Court held that Evers’s rhetoric did not cross the Brandenburg line. “Strong and effective extemporaneous rhetoric cannot be nicely channeled in purely dulcet phrases,” it wrote. “An advocate must be free to stimulate his audience with spontaneous and emotional appeals for unity and action in a common cause.”5Justia. NAACP v. Claiborne Hardware Co. Absent imminent lawless action, such appeals are protected speech.
Incitement Is Not the Same as True Threats
Brandenburg governs incitement, where a speaker urges an audience to commit illegal acts. A separate category of unprotected speech, the “true threat,” covers a serious intention to commit violence against a specific person or group. The two doctrines target different dangers and use different tests, and speech that falls outside Brandenburg may still be prosecutable as a threat.
The Supreme Court most recently addressed true threats in Counterman v. Colorado (2023), holding that to convict someone for making a true threat, the government must prove the speaker had at least a reckless awareness that the statements would be perceived as threatening.6United States Courts. Facts and Case Summary – Counterman v. Colorado A purely objective “reasonable person” standard is not enough. Meanwhile, inflammatory slogans at a political rally are more likely to be treated as protected political hyperbole. The Court drew that line as early as Watts v. United States (1969), where a protester’s statement about putting the President “in my sights” was “mere political hyperbole” rather than a prosecutable threat.7Constitution Annotated. True Threats
Why the Ruling Still Controls
Brandenburg set a high bar by design. The alternative was a legal regime where the government could jail political dissenters based on the tendency of their ideas rather than the reality of any danger. Every significant expansion of speech protection since 1969 builds on the principle that the First Amendment protects advocacy of ideas, however extreme, unless the speech crosses the narrow line into inciting immediate criminal conduct.
That principle faces new pressure in the era of social media, where inflammatory rhetoric can reach millions instantly and where the line between “imminent” and “not imminent” is harder to draw when a speaker addresses a dispersed online audience rather than a physical crowd. Courts have not yet produced a definitive ruling applying Brandenburg to online incitement, and prosecutors pursuing online speech tend to rely on the true-threats doctrine instead.
What the decision made unmistakable is that the government cannot criminalize offensive or radical speech simply because it is uncomfortable to hear. The protection extends to racist language, revolutionary rhetoric, and ugly political arguments alike, so long as the words stay in the realm of advocacy rather than tipping into an active call for immediate violence that a crowd is ready and likely to carry out.8Legal Information Institute. Brandenburg Test