A minor cultural note: In my opinion, local Yankee racists are worse than Southern racists; they don't even like Uncle Toms and Aunt Jemimas. One can only wonder how Abraham Lincoln ever talked these people into fighting a war to free slaves. And the main difference between local country-clubbers {affluent, often Midwestern} and the local Klan {poor, Southern} is that the former tolerate Jews and Catholics, probably because there are so few Jews and the Catholics are generally as conservative as country-club WASPs.
The author reflects on regional racial attitudes in the United States, suggesting that racism in the North, particularly among affluent Yankees, may be more insidious than that in the South. He points out that Northern racists disdain figures like Uncle Tom and Aunt Jemima, raising questions about how such individuals historically supported the Civil War aimed at freeing slaves.
Additionally, he compares the cultural dynamics of wealthy Midwestern country-clubbers with those of poorer Southern Klan members. He notes that the former generally hold more tolerant views towards Jews and Catholics, likely because their numbers are minimal and the Catholics align closely with the conservative values of the country-club elite.