I grew up in Africa. It's interesting that so many US citizens of African descent expect to go back to "The Old Country," and "just fit in." Lot like the Italians and Irish.
As far as Africans go, there's not a whole ton of difference between white Americans and black Americans. I think that, like in Europe, there's entrepreneurs, setting up "Return to Your Roots" tours for diasporans.
Europe probably has more experience with Africans than the US. When I have met black folk in Europe, they have frequently been first- or second-generation Africans, as opposed to the US, where most black folks I know come from families that have lived here for many generations. I think the UK has a similar culture.
I lived in Uganda, when Idi Amin threw out all the Ugandans of Indian descent. These were true Ugandans, who had lived there for generations. It was devastating; both to the people that were thrown out, and the nation, itself. The infrastructure of the nation collapsed, almost overnight.
It's pretty much impossible to "un-mix" a mixed society. That's not for want of trying, though. History is full of "ethnic cleansing" boneyards. It never seems to end well, but we seem to be a bit thick, in learning the lesson.
