This comedian is just not that bright.
I would think it's common sense, when doing racist jokes, to be either
1) Belong to the race you're making fun of
or
2) Joke about an aspect that has both positive and negative implications
For example, he could probably make a joke about how Asian females tend to have smaller breasts (A/B cups) and relate that to the Asian standard of education, in which parents only expect As from their children.
On another note, that shit looks staged because of how easily "Geroge" was peeled off from the "comedian". (no struggle whatsoever)
If that kinda shit happened to me, where the comedian started harassing the girl I'm with, it'd take more than one scrawny guy to pull me off from bashing the "comedian"s face in.