How to quickly piss me off:
Make jokes about school shootings
Blaming school shootings on things you don't like
If the school in question is Columbine, then congrats, you've graduated to full on berserk button. The reason why Columbine happened was because Eric Harris wanted to be remembered for an event that would eclipse the Oklahoma bombings earlier. Not music, not video games, and not primarily bullying. Had he not been so bad at chemistry, my school would be a pile of rubble, and at least ten people I've come to personally know and respect would be dead.