Being a racist is as okay as not being a racist, provided one does not try to justify his racism on scientific or philosophical grounds.
The admiration or repulsion we experience at the sight of a person is purely aesthetic; even if we were to say there is an instinct at work in the interpretation of what is recognized as beautiful, there is no rational reason why that should be preferred.
To say ‘this is beautiful because it is beautiful’ is as circular as saying ‘this is beautiful because it is symmetrical and symmetrical is beautiful’.
And to say ‘she is good because she is beautiful and being beautiful is good because it is conducive to beautiful breeding, which is beautiful because breeding is good’, is a slippery-slope at best, a non sequitur at worst.
Why should I feel she is beautiful and the other girl is not? Because I want to? I know I do feel this way, so naturally I would want to experience the joy of feeling this way by recognizing what it is that makes me feel this way… but still there is no reason why I should outside of my believing I should act a certain way to demonstrate my belief: that she is beautiful, that I have no choice in the matter (I cannot say she is ugly), and that X and Y is what I do because she is beautiful.
There is no rational explanation for any of this, so the judgement is purely aesthetic, and it can only become philosophical insofar as it is acknowledged from the start that trying to defend a racism is not a scientific endeavor.
There are performative and functional standards for ‘better’ and ‘worse’ regarding the measure of value of a given animal; this wool is better so that sheep is better for making better wool. But beyond those two standards, there is no ontological or metaphysical value to the wool or the sheep. The same is true for man.
Racism should be art; tinkering with human DNA as a engineer might tinker with a mechanical device in order to make it work a certain way. None of this is personal and nature doesn’t care one way of the other about a few billion carbon based life forms over in the corner of a galaxy somewhere arguing over who’s genes are better.
So get over yourself.
No, seriously, get over yourself… like a tightrope walker over an abyss.