I genuinely don't know if I'm being AIBU and dramatic here or not. My brothers DS has just turned 2. Brothers DP are all into boxing and have been taking him. So he now loves to copy and goes round punching things. They also encourage him says come on fight me and he punches their hands.
AIBU to think at this age he doesn't really know what he is doing yet and that this could lead him into trouble. He hasn't started nursery yet but I can imagine him going round punching other children when he does without realising he could hurt them.