If their action had clearly threatened order and safety . Good Luck on your assignment.
The public school students' silent protest, by using symbols, in the form of armbands, during school time, cost the students a suspension, because it was considered a violation of a school rule. After the case had been judged by the Supreme Court, they finally won the case. But the outcome could be different, if their protest used "indecent speech" or promoted illegal drug use.
