Back in the day I use to beat up people who bullies good kids or gang-wannabes who taunts people to fight them in my school, I end up hitting them so bad teachers think I'm the one responsible for the mess (sounds like some corny flick eh?).
Never had problems during college and outer areas, to realize punching people who dares fight you on the face won't do anything, much less talk them out or just completely ignore them.