I beat up a child in a public bathroom and got arrested on Friday.
Why did you beat up a child in a public bathroom?
He was disrespectful to me and I needed to teach him a lesson.
Just because you think someone is disrespectful, that doesn't give you the right to assault him. Attacking a child is wrong and you can end up in prison if convicted of assault.
I don't care if I go to prison, I don't regret my decision.
Beating someone up, especially a child is not appropriate behavior. You have to find more constructive ways to handle your anger. Speak to a professional about your anger issues so that they can help you control your behavior.