Fun day at the Park!

So we were at the park today and Justin was digging in the dirt to find wiggle worms. This little girl comes over and kicks him in the mouth for no reason. He comes over to me screaming while his mouth is bleeding. Me being a protective mom, go over to tell her, "Hey so you know, your daughter just kicked my son in the mouth and it is bleeding." The lady jumps up quickly out of the bench and chases her little girl down. She then starts repeatedly spanking her and screaming at her. The little girl starts retaliating against her mom and is beating on her. The mom yells were going home you have been a bad girl and carries the girl while she is pulling her moms hair all the way to the car. While she leaves, I am thinking to myself....now I know where the little girl learned to be aggressive from. I feel kinda bad because the only thing I wanted was an apology not a beating.