The noted US Supreme Court Justice Oliver Wendell Holmes Jr. said nobody had the
right to yell "Fire" in a crowded theatre.

"Calabresi says that a writer such as Oliver Wendell Holmes, Jr., though
a witty stylist, could raise confusion. Calabresi mentions one of
Holmes's most recognizable lines: " The most stringent protection of
free speech would not protect a man in falsely shouting fire in a theater
and causing a panic." "What help is it? And how many bad decisions
have followed from this clever quip?" asks Calabresi."