Fighting words—words that by their very utterance inflict injury or tend to incite an immediate breach of the peace—are not protected by the First Amendment. Decided March 9, 1942 (argued February 5, 1942). Opinion of the Court: Frank Murphy → go there Applied: the First Amendment → go there Topic: Freedom of speech and of the press. Chaplinsky v. New Hampshire, 315 U.S. 568 (1942), is a landmark decision of the Supreme Court of the United States in which the Court articulated the fighting words doctrine, a limitation of the First Amendment's guarantee of freedom of speech. Wiki link