So if I'm reading right, basically Berka's article is saying that while actual violence has declined, the 'threat of violence' (police) is basically in it's stead anyway.
That's not wrong. We've seen several cases in America's history what happens when the police go on strike. Death-rates in today's Baltimore have shot up if I remember correctly.
And, of course, the Middle-East is predominantly a shithole as it's always been
I feel like there's a lot more 'soft' people nowadays, what with college students needing their 'trigger warnings' and whatnot, and while I'm not sure how that fits in the discussion, I think that our current culture is different, not 'better' regarding violence or it's prevalence. I mean, TV is much more violent nowadays than it was 50 years ago, but that doesn't mean much either way. Things like teachers hitting their students is just expressed differently nowadays in our culture.