[raxxorraxor]

You jail a father, kid gets mocked in school because the father is in jail and he kills some mates with a knife.

I don't believe any of the points you make are drivers of violence at all. You perhaps failed to analyze the typical issues.

I do agree that a society might want to ban guns. Policing is much safer and there are a lot of other advantages. Fewer deaths too of course. But I heavily doubt the presence of guns is reason for an increase in violence among younger people. On the contrary, I think some people are well underway to create self-fulfilling prophecies. Security at schools is part of that.

There is a recent increase in crime but certainly to none of the factors you mentioned. I live happily in a country without access to assault rifles. But we probably disagree on what constitutes drivers of violence.