Frankly, I think there is a very valid point here. The current status of the black race genuinely appears to be bad, as far as mental capability is concerned. However, I don't believe that it's inherent to the race. That is, I believe that someone could, in principle, embark on a selective breeding campaign to turn the black race into the (statistically) most intelligent race after many generations. This might, of course, be evil and involve the "removal" of the bottom end of the bell curve, but it emphasizes the point that the mental capability of any given race is a dynamical variable and not a fixed, inherent trait.