Family gives Principal Contusions over grades and cell phone ban

More violence in the classroom in Italy:

This time male relatives of a young student gave a veteran Principal contusions, their ire raised by the student's poor grades and a cell phone ban.

Really, I don't know what to say about this one. I'm at a loss. I think I might be glad I didn't choose to follow the advice of my teachers and mentors in joining the classroom. It gets bloody!