The Supreme Court Tinker v. Des Moines involved the issue of

Tinker v. Des Moines is a historic Supreme Court ruling from 1969 that cemented students' rights to free speech in public schools. A group of students decided to wear black armbands to school to protest the war in Vietnam. The school board got wind of the protest and passed a preemptive ban. When one of the children arrived at school on she was asked to remove the armband and was then suspended, four others with her as they too did not remove them. The students were told they could not return to school until they agreed to remove their armbands. The students returned after the Christmas break without armbands, but in protest, they wore black clothing for the remainder of the school year - and filed a First Amendment lawsuit.