How to define race, it's a genetic cluster often brought about by a closed or isolated population.

Think how we got all the dog breeds of today from the six(?) basic ones little more than a hundred years ago, here the differences are reinforced by "breeders" and the desire for "papers", in human societies the differences are reinforced by vaguely definable social conventions.

Now I am sure soemone/s will find plenty of reasons to be offended by my comment, feel free to be offended, but I am not saying any particular closed group of genes are better than any other, just that they will have differences and specific strengths and weaknesses.

We own a short legged dog (English staffy), it tries hard and gets to remarkable speed considering, but no way it can run as fast as a whippet.

And there you see how it is only a short trip down a very slippery slope to apartheid, that sounds good in theory, but could never work as long as humans won't be equally generous to a stranger as to someone they identify with.