Momma Bear

So I went "momma bear" on a kid at the playground today.
I wish I didn't.
Ethan was embarrased (I think) but at least he got his hat back.

Where's the line there? My son wasn't defending himself, and I happened to be there. Should a parent speak up? I wasn't rude but I did strongly suggest that he keep his hands to himself and if its not his, don't touch it.

I guess I'll have to chat with Ethan to see if he got a wedgie for having a loser mom today.
My bad.