Indeed, if mankind evolved over millions of years, and the 'races' of homo sapiens sapiens have been separated for tens of thousands of years, you could easily conclude that one 'race' would be smarter, one stronger, one more artistic, etc.
Which is why Macroevolution--from a social standpoint; not bringing science into this--is an inherently racist hypothesis.
Mutations are almost invariably detrimental, and humans have only existed as a species for a few millennia, and for even less time in isolated groupings, which is now becoming more and more less isolated.
I’d have to agree that blacks are less intelligent as they almost always vote for Democrats.
You’re confusing natural selection and evolution. They are two different things. Natural selection would occur whether the first man was created by God, evolved from lower forms, or was seeded here by aliens.