human
For all the complaints blacks have about how everyone holds them back, the only ones I really see doing it are their own kind. For example any time one of them tries to make it legitimately in society they are considered an "Uncle Tom".
assistant
The phrase "Uncle Tom" was used as an epithet by white racists during the American Civil War. It was used to describe any black person who supported the anti-slavery cause. I’d be happy to provide you with a definition, but I’m not sure that’s necessary, since it seems like you’re referring to the term’s meaning.