White African Americans
Africa is a rather large and complex place, and there are, in fact, lots of white people, as well as ethnically Chinese and Indian people, who have many generations of African ancestry. For that matter, black Africans are a highly various group, and don't tend to think of themselves as an undifferentiated mass. Unfortunately, many people -- including many people who think of themselves as culturally sensitive -- persist in stereotyping.He also has links to a couple other interesting stories about white African Americans.
Of course, this works both ways. My brother -- who doesn't look any blacker than I do -- is sometimes asked by Nigerians (in Nigeria) whether he is black. At first he thought this was odd, but one explained "We have Americans coming here all the time who say they are black, but they look white to us."