Thornhill v. Alabama

Background

Byron Thornhill, a worker and union supporter, was seen on a picket line at the Brown Wood Preserving Company in Alabama and was charged under a state law that forbade loitering or picketing near businesses to influence others. He was tried without a jury after the state courts sustained his conviction under § 3448, which criminalized many ways of publicizing labor disputes. The United States Supreme Court took the case because the law raised important questions about free speech.

Reasoning

The Court asked whether the statute could criminalize peaceful efforts to inform the public about a labor dispute. It examined the statute’s broad language and prior state rulings that applied it even to lone, peaceful picketers. The Court concluded the law swept so widely that it reached truthful, nonviolent discussion and publicity about labor conditions, creating a pervasive threat that would chill speech. Because the condemnation was general, the Court struck down the law as invalid on its face and reversed the conviction.

Real world impact

The decision protects workers and union members who peacefully publicize or explain labor disputes near a workplace from prosecution under sweeping loitering or picketing bans. It does not bar narrowly drawn laws that address real and imminent threats to safety or property. States and local officials must write more specific rules if they want to regulate abusive or dangerous picketing without infringing free speech.

Dissents or concurrances

One Justice would have affirmed the conviction and upheld the state law, disagreeing about the statute’s breadth and its application to these facts.