Zombies of all race, creed and color deserves a bullet to the brain...oh, you just said that... well, I second that thought.
The game does have some racially insensitive material, simply due to historical baggage that people might or might not have. Being white and raised in a fairly inclusive community, I'm fairly oblivious to the less blatant examples of perceived racism anyway, so what do I know. A zombie's a zombie.
Resident Evil 6 will probably have a level in a maternity ward where you shoot pregnant zombie women and zombie newborns. That'll go well with the media.