I know where this is going, but in the interim there are blacks living amongst us, and i'm not sure I see a situation where they would be deported or killed in the near future.
Since they are amongst us, we should encourage them to learn about their history so they can take pride in their ancestry. This might help lower crime, promote a black middle class which will integrate better in our societies.
Racial tensions will improve, like have with Asian Americans in the US.