He threw a punch. Everyone knew he knocked her out. What more could he have said. Now if he was beating her senselessly on the floor I would say he should rot in jail. But they were fighting, he threw a punch, she was knocked out. Probably will regret that split second decision the rest of his life. The video really is not as bad as I thought it would be.
There's a reason for that: you're got abuse issues, which the "some women desrve to get smacked" comment clearly showed.