Doesn't that kind of prove the point? Masses become involved in a mass delusion, an egregore, a social contagion if you will, people start basically behaving like bots. It's like some outside force takes over. I'm speaking about the ones committing the genocide in this case. I understand the danger of dehumanizing people though. Tbh, being a kid during the war in ex-yu I am also still very disturbed with how little it took and how easy it was for some to do horrible things, which is probably also why I consider some of those people lacking something within, or at least not being fully self-aware beings during those times.