I think it would be silly to discount the role that culture plays in this problem. Look at the difference between Nigerian (particularly Igbo) immigrants in the United States and slave-descended black Americans in terms of education, income, and so forth. Nigerians are some of the blackest blacks to ever walk the earth, but Nigerian immigrants have maintained a culture that is distinct from the broader black American culture, and as a result they are much more successful. It is patently absurd to call people like this “subhuman.”
Of course, I will concede that genetics plays a role in the formation of culture, but in the case of American blacks many aspects of their culture have actually been drawn from the white culture of the old south — preoccupation with defending one’s honor (reacting harshly to perceived insults), propensity for violence, etc..
I will grant that most black populations appear to be at an IQ deficit relative to whites and East Asians, maybe ~10-20pts on average. I still don’t take this to mean that they are less than human or are incapable of improvement. Cleverness is not the only measure of a man. The real problem, at least among American blacks, is their unwillingness to honestly assess the problems with their culture. They tend to externalize blame and avoid any honest introspection about what’s going on.
