Wanting the AI to have the same racial bias as Americans, that is that Barrack Obama who is half white half east African should be categorised the same as someone with west African heritage is just dumb. Barrack Obama has a white mother and a father from Kenya, so has little resemblance to African Americans who have mostly west African heritage, only reason people don't see a difference is because they are so used to categorise people by skin color. Of course getting data from all areas of Africa and all mixes of people would be great, but there are limits and adding in more west Africans wouldn't have helped accurately depixel Obamas face.