All divergent evolution begins with tiny, barely perceptible differences, some physical, some mental, between otherwise identical races. Gradually, given enough spatial or behavioral/spiritual/intellectual separation, those differences increase and a new race is formed. Eventually the differences become so great that interbreeding no longer takes place, or nearly so -- and thus a new species is born.
All evolution proceeds in this manner; there are no exceptions. It is the means by which ALL species, from plankton to the grasses of the fields, from the snow egret to Leonardo da Vinci, were born.
Therefore racial separation is a NECESSARY component of evolution. Evolution could not take place without it. None of us would be here -- there would be no humanity at all, in fact, without racial separation.
So racial separation is not only NOT evil -- it is ESSENTIAL, even sacred.