It’s very simple. People who are never looked after by their community, but only harassed, beaten and killed, will not see themselves as part of that community but as an enemy.
Social values really matter. Countries with low crime rates don't have them because the police are educated about deescalation. That is important too and I support that, but the police are largely irrelevant to the underlying issue. This is coming from someone who grew up thinking social conservative types and people going on about social values needed to relax. I was wrong and realized that when I had children. Children absolutely need stability, reassurance, love and guidance from their mother and father, it's absolutely critical.
violence is inherent to animal life and it does not require delusion. that's like saying an alligator is delusional for attacking a deer.