I don't think you can judge fighting ability by race. I've seen a lot of athletic black guys that couldn't throw a decent punch. I've also seen some 105 lb asians that I wouldn't mess with.

If you pick fights by race, age, or size. It might work for a while, but you'll get surprised eventually. Plus you never know who's packing. And even though I'm packing, if I have to shoot someone it's going to be over something worth going to jail for 20 yrs for.