As I understand it, the Egyptian populace was very mixed, with Middle Eastern and black African ancestry. Egypt was in it's heyday the center of the world, much as America is today, and thus attracted people from all over. Remember the story of Joseph becoming the Pharaoh's right hand man, and how he encounters his brothers years later after they came to Egypt from Canaan asking for food. A very good modern example of mixed race ancestry would be the late Anwaar Sadat, who bore both black African and Middle Eastern physical characteristics. I've seen footage of other modern Egyptians also with the same obvious ethnic background. Does that mean that ancient Egypt was a black African kingdom? No, but it doesn't exclude partial Black African lineage among Egyptians, either.
-Bill, otherwise known as Kraichgauer