Angy: I think it is a deep rooted tribalist instinct, a kind of we versus them. We are exquisitely designed and adapted by evolution for life in small societies with intense animistic religion and violent inter group conflict. Angy: How do you suggest that kiley, or the rest of us, can finally adjust certain settings to minimize this sort of tribal aggression? One of the studies i remember learning about is called the robbers cave experiment. It'll help illuminate this question.