I fully agree with you, but I think we are picturing kids at the opposite ends of childhood. In my head we are talking about little kids that are very young and just learning things like impulse control and what is fair. The smear of the very few pixels left in the OP's image gave me the impression that we were dealing with someone pretty young. But if we're dealing with older kids, then the dynamic does change dramatically. If your teenager is physically lashing out at other kids then we are dealing with someone with behavioral problems (both child and parents) and that does need a much stronger correction.