Spinoff: Have you ever confronted a parent beating their kid in public?

I was in Albertson's last week and this grandma was not only complaining to the check out guy that he was double charging her, but she was also beating and screaming at her 3 year old grand kid for merely hanging on the cart.

I told her to hurry up and quit talking to the kid like that. she said it was none of my business. She was probably right, but was taking forever to check out, so it was kinda my business.