At my junior high that I went to, you would sit in the cafeteria during study-hall. One day during study-hall this one kid was quietly talking to another kid (Which was against the rules) while one of the big male gym teachers was walking by. The gym teacher heard the one kid quietly talking, and the gym teacher told him to shut up. The kid that was talking sort of quietly laughed for a second, and the gym teacher told him to get up and that they were going to the vice-principals office. So the kid starts to walk in the direction that he would have to to go to the vice-principals office, when all of a sudden the gym teacher walked up behind the kid and kicked the kid in the ass really hard. The kid turned around and punched the gym teacher really hard in the face.
About a year later I was working-out at a gym that was in a college right down the street from my house. This kid walks up to me and say's "Hey Bill, how's it going?" I didn't remember him, so he said "You don't remember me, I guess?" And then he said "I'm the guy that punched Mr.-----" (I myself can't remember the gym teachers last name)
I shook his hand and told him that was awesome.

I myself swore that if a teacher ever hit me in any way at all that I would cave his face in if it was a male teacher, and slap her silly if it was a female teacher.
And even though I used to be a boxer, I'm a non-violent person in general. But people have to stick up for their rights.