http://www.theamericanconservative.com/dreher/evolution-the-culture-war/

As Sailer points out, it is perfectly possible to reconcile the spiritual and moral equality of humanity with what science tells us is true about human biological variability. The problem, I think, is that we humans are bad at this. Given the history of the 20th century, I flat-out don’t trust our species to handle the knowledge of human biodiversity without turning it into an ideology of dehumanization, racism, and at worst, genocide. Put another way, I am hostile to this kind of thing not because I believe it’s probably false, but because I believe a lot of it is probably true — and we have shown that we, by our natures, can’t handle this kind of truth. We will use it to construct ideologies that justify inhumanity with the authority of Science.