My feelings on stuff like this has been pretty consistent. I personally don't respond similarly to being racially attacked, which has happened to me a few times. But my feeling is that if you are intentionally goading people over such sensitive topics, I'm not going to feel sorry for you if they respond in a not-so-respectful manner. Insulting somebody's race, family, etc. so severely is just asking for them to react physically. We're human. We have limits to our patience and tolerance. Stop trying to test those limits.