Patterson is black, but he is from Jamaica, and he received a rigorous education in the late 50's and early 60's before the universites went nuts. He observed firsthand the differential success of West Indian blacks and American-born blacks in America, which "racism" fails to explain.
You would be suprised at the animosity and resentment between Jamaican immigrants, who are fairly industrious, and American Blacks. A few years ago, I treated a Jamaican who was attacked by American Blacks who resented his prosperity. He wasn't robbed.