This old egg again, you'd think creationists would have learned by now. Firstly, from a genetic standpoint, races do not exist. There is simply too much gene flow for that. It is not possible to determine a persons race on the basis of the DNA - period.
Secondly, there is no quantifiable differences in intelligence, strength, disease resistance, etc among the human "races"; no real inequities, aside from the ones which arose from human ignorance and superstition.
As for Hitlers eugenics plan, that represents a prime example of ignorance of evolution. He may have cloaked his idea in the name of evolution, but 70 year earlier, in Darwins time, it was already understood that variation, not "perfection", is what creates a strong species.