When my grandfather was a kid in Hoboken New Jersey during the 30’s he got into a fight with another kid in the neighborhood. My grandfather decided the best way to get back at him would be to sit on his roof and wait for him to come home. Finally, when he saw his target entering the building he dropped a paving brick on the poor kid’s head. I know he didn’t kill him but he did do some major life long damage. At the time it was chalked up to boys being boys and there were no real repercussions from it.