They were only integrated into Egypt because Egypt ****ing conquered them.
And you can whine about black empires all you want - the simple fact is, they never achieved anything close to the levels of civilization, technological advancement and social enlightenment a ****LOAD more non-Black empires have achieved.
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Is that why white colonists in southern Africa were so eager to wipe out any remaining vestige of the local black empires? Were they so desperate to remove traces of civilizational advancement that never existed in the first place? Anyway, racists (of any colour) are the kind of people pictured in that Monty Python episode with the Idiot of the Year contest. Tell them to walk under a bar and they'll jump up to make it fall off. Not to mention that, because of their disgust towards mixed-race relationships, ultimately they promote incest... Hm, maybe there's a method here after all, more people born out of incest = more people likely to believe that racist bull****...
Oh, and a lot of the music you listen to (unless your CD collection consists of classical, country and non-black folk music exclusively) is very likely to exist only because of the black people. No blues = no jazz = no rock, no metal, no rap, no funk, whatever. Not to mention that certain types of jazz music are a vital part of the very limited amount of music out there that is not about regurgitating the same damn thing all over again (as nearly all of popular music nowadays), but about pushing the envelope... true jazz (as in not the kind of crap you hear in cafes or on smooth-jazz radio stations) has always been about progress, not always in the hands of black musicians, but usually so.