Wow... some advice, toughen up. Are you seriously getting butthurt over something perfectly fine? I mean, one of my friends is black, and he's not offended in the slightest by the Witch Doctor! (in fact, it's going to be his second character).
Seriously dude, toughen up and don't blow small things like like this out of proportion (even though there is NOTHING to blow out of proportion).
And if they were stereotyping, then it would be Haitian.