I'd offer that the problem is compounded (and actually really the root) by anti-social parents who are unable or unwilling to parent appropriately, then raising hell when teachers attempt to cajole the student into being pro-social
As well as that the parents of the victim are easier to deal with even when the child is damaged than the parents of the bullies. And the parents of the victim may also be complicit in the victim blaming. It’s absurd to think it’s something that could be fixed in a generation also.