I think if we know the country someone's ancestors came from, which unfortunately is not possible in the case of African Americans who were brought here as slaves, we should say so..like Etheopian American or Ugandan American..same as we would say Polish American or Welsh American (which we really don't..so many people just got assimilated). It would be their preference of course..but we should certainly give them the same respect and consider that some might want to be known that way...mg