What really makes you angry?

I don't usually get angry at all but one thing that is sure to piss me off is bullying. Even in my preschool days, if I saw someone getting bullied or isolated I'd befriend them and get into it with their bully which is big for me because I was a shy child and had social anxiety. I didn't let my shyness get in the way of standing up for what's right though. I'm surprised I never got beat up lmaooo