Identify which actions listed below would be protected by the U.S. Constitution. Select all that apply.
A. students wear black armbands to school to protest the Vietnam war
B. A student burns his draft card, a legal document, to protest being drafted.
C. A pro-nazi rally is held in a public park
D. A woman burns an American flag to show her displeasure towards the government.
E. A student calls a bomb threat into school