In South Park and this hilarious book on America by Jon Stewart, they've stated that human beings will evolve into tan bald beings.

I'm not actually sure this is true. There's a legitimate correlation between skin colour and athletic ability in a lot of sports. There's a reason that in american football most great wide receivers and running backs are black. I don't see what's gained by pretending that's not true. As long as you don't treat people based on their skin colour, it doesn't matter that we're a bit different.Not sure if trolling or genuinely curious. But anyway
We're all one race already, the differences between a black and a white person for example amounts to the same differences between a blonde and a red-head.