Summary
Byron Thornhill was the president of a local labor union. As part of a labor strike, Thornhill picketed his employer. He was later arrested and convicted for violating an Alabama law that banned labor picketing. In an 8-to-1 decision, the Supreme Court struck down the Alabama law, concluding that the First Amendment protected this form of expression. In his majority opinion for the Court, Justice Murphy offered a powerful account of the connection between the First Amendment and democracy—setting the stage for robust defenses of free speech by later Justices. Building on Justice Brandeis, Murphy argued that for democracy to work, the American people must believe that their government is responsive to public opinion. On this view, the American people must be free to shape the views of their fellow Americans, and the government itself must respond to public opinion over time. As a result, the First Amendment must protect forms of communication—like labor picketing—that are necessary to inform public opinion.