You just gotta see it this way:
Doesn't matter what your opponents appearance, you need to assume they are out to kill you. Since these are my terms, I will take necessary actions. With a strong Kung Fu and Jiu-Jitsu backround, this ideal becomes a part of you.
i.e.
When I was 14, I lit an 18 yr old senior's afro on fire. It all started because he threw a full can of Dr. Pepper and it hit me in the head. His two friends took chase and didn't fare as well as the kid with half his 'fro gone.
At 16, 4 ass holes decided to jump a friend of mine. Just so happened me and another friend were riding our bicycles in the area. A 55 gallon steel drum (trashcan at the school) met the top of one kids head... Survival my friends. Utilize every tool around you, whether it be a toothpick or a .50 cal.
If anyone wants to hear the worst of them, I'll tell ya. But I don't want to seem like a irrational violence crazy moron.