Scenario $1$: Constitution

Paul Mitchell, a student at Raleigh Egypt Middle School learned he received a $$D$$ in his history class, which meant he would have to attend summer school. Mitchell posted on Facebook that his history teacher and the principal should be shot. Mitchell also posted a cartoon that showed the teacher$$s head on a body that had been mutilated. Mitchell$$s mother instructed her son to remove the post, but he refused. The principal suspended Mitchell for the last month of school and contacted the police.

Determine whether Mitchell$$s statement and resulting actions by the school violate the First Amendment.