He's not racist because I don't understand him. He's racist because he thinks black people are genetically uncivilised and his evidence for that is that poor black people looted after Katrina and sub-saharan Africans didn't develop writing and two story buildings.

Both of those appear to be roughly true, but the racist thing is that he's jumped to "must be because they're black", rather than the much more obvious explanations: it's poor people that loot, not black people; they just happen to coincide in America.

And there are a gazillion variables that are more likely to have affected the development of Africa than genetics. Geography, population density, isolation by the Sahara, luck.

Clearly very smart. Still racist.