Self defense does. The guy was going around attacking people and eventually ***** around with the wrong guy. Do enough bad ***** and something bad will happen to you. People are on edge getting attacked often on the subway and other places. These are the consequences. Do you stand there getting attacked by someone having a crisis and accept death or serious injury? I mean 40 arrests how was this guy still on the street? At a certain point he should be give a long sentence as it's clear he can't function in society.