When you're in a fight and the opponent is unconscious on the ground, then the fight is automatically over. That's it. It's done. You've won. When you continue hitting someone when they're defenseless, not fighting back, and knocked out - then your charges in court are gonna skyrocket and you'll probably end up in prison. This goes from possible assault to possible attempted murder. I ain't a lawyer, but I know this is messed up and a judge will find it messed up too. Don't hit people when they're knocked out, end of story.