Violent criminals do not suddenly appear on the streets from out of a portal from another dimension. They start out as babies, then toddlers then children. Something goes very wrong, neglect and lack of guidance, developing a delusional reality of the world , and by the time they are adults are unable model how the world actually works and cope to sustain themselves. Desperation and short-term thinking sets in, and violent crime follows.

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.