Nah, even as a child that's unacceptable. My kid is only 5 and I don't let them hit people, and punish them when they do. The response from the parent shows the apple fell straight down
Edit: if you think this is advocating violence against children, go touch grass or read a single book on parenting ffs. Natural/logical consequences make good punishments for misbehavior, and have gone a long way to helping my kid not act out (and are nonviolent, since that has to be spelled out)