There was nothing any more special about that man than there is about any of us. I insult people constantly without taking a second to realise who they really are. Or he may just be a hoon. The fact is, we really don't know. Judging the population, proclaiming the world to be shit, and trying to change it is akin to teaching a Lion that antelope are precious living beings and fruits and vegetables are much more tasty - and socially acceptable to kill and eat.
Nature is nature is nature.
Granted, it's also kind, intelligent, nurturing, and responsible. The world doesn't need changing. It needs nothing from us. Everything I have written has been true, and at the same time, a blatant lie. Things in this world are too complicated to take sides.