I know. I've been in many fistfights with them as I defended the honor of the less fortunate. Of course I have always won.
Funny story, once I was walking past a bar and heard a loud biker all in leather and chains make a racist comment. I hollered inside that I bet he wouldn't talk like that without his buddies all around him. He came outside to challenge me in combat. I told him I would give him one free shot but he better make it count or else he'd be sorry. He reared back to deliver the blow, I stood there and let it come, never flinched once. He cut my lip a little, but I calmly wiped the blood away with the back of my hand and said "Was that it? If I wanted a kiss I would have asked your sister." Then I hit him once and he dropped to the ground unconscious.
When he came to he actually thanked me for the lesson in manners. He once was a skinhead with swastika tattoos but now sports a full head of hair and is trying to keep his younger brother from going down the same path he did. I was just happy to make a difference.