On TV I saw where in a restraunt this tall 350 lbs. black man was beating a white guy for no reason (because his noisy wife was complaining about him so he started beating him), and there were other people around and no body did anything to help. Even the host of the show (I believe it was Disorderly Conduct: Video On Patrol) mentioned that no body was doing anything.

The loud-mouth wife got 2 years in jail, and the big tall man got 4 years.