Same here.
I punched out a another kid when I was six years old. That was the end of that.
Kids need to learn how to stand up for themselves.
I am glad not to be the only dinosaur(in this regard)!
My kid is taking karate right now (he’s four) and he has put up with this kid in his school, Jeremiah, for a while now pushing him around. My wife even witnessed the little creep pushing him to the ground when she went to pick him up from school one day. I have kept my lip zipped until now, and sat down with my son and told him what he needed to do to make Jeremiah understand. He did it, and now Jeremiah/Future Dahmer steers a wide berth around him.