Because they're different than us. You wouldn't call a wolf a dog would you? Then why call a negro an American? You would say "wolf-dog"...and we say "African-American" because we can't say Negro-American. They're a different species and that's how we identify them. WHITE people mixed into the "melting pot" into Americans...blacks never did because blacks couldn't...still can't...that's why they get affirmative action and quotas...it's the ONLY way they can get in.

And call a negro a different species...because they ARE...23andme PROVED it...widespread genetic testing of the worlds populations PROVED it. Negros are up to 1/20th different from EVERYONE...EVERY race genetically.

"They were able to achieve near-complete genomic sequencing, allowing a detailed comparison with Neanderthal and modern humans. From this analysis, they concluded, in spite of the apparent divergence of their mitochondrial sequence, that the Denisova population shared a common branch with Neanderthals from the lineage leading to modern African humans. The estimated average time of divergence between Denisovan and Neanderthal sequences is 640,000 years ago, and the time between both of these and the sequences of modern Africans is 804,000 years ago."

"Analysis of genomes of modern humans show that they mated with at least two groups of Archaic humans: Neanderthals (more similar to those found in the Caucasus than those from the Altai region)[12] and Denisovans.[19][22][37] Approximately 4% of the DNA of non-African modern humans is shared with Neanderthals"