Derbyshire compared ethnic groups. His analysis was on point. The fact that Blacks compare unfavorably to Whites in some areas is in may instances due to the inhibitions placed on them by their adopted political party. Had they been given a proper opportunity to improve themselves, I have no doubt they would be comparable to anyone. And I say this from familiarity; not statistics.
At a certain point, people have to take responsibility for their own choices. They have churches. They have access to this message from a spiritual point of view, beyond politics. That more don't "hear" this message is a mystery to many.