His action needs to be encouraged for sure.
However, I was just saying that it take a lot more courage to fight back at someone who is bigger than you. The victim in the video was big enough to lift the tiny bully and throw him. It didn't take the same courage to fight back at a small bully like that. It was more like a peaceful big guy finally snapped. He had no reason to fear the little guy. As the matter of fact, at the very beginning of the video I thought the smaller guy was the victim. 
I'd love to see a video of a small guy fight back and win against a bigger bully.
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