Well, I’m not actually sure if you’re serious about what you just wrote or not, but go read Freakonomics.
Social/criminal violence is a sport for young males. When societies age, violent crime rates go down; when there’s an bubble of men in the 16–30 age group, violent crime rates go up.
And we have a bubble right now in the 22–30 age group. Once the tail-end millenials age out, violent crime will die down back to 90’s and 00’s levels.