Sundown towns. Excellent MLK Day reading. I’d make the point that people often forget that this whole “give them a middle class!” thing has been tried before; white folks tend to get twitchy with the guns and torches when middle class communities of color get “too big.” Progressives should never forget that the more recent history of white oppression is just as ugly as the antebellum version. These conditions are part of the reason why the “race question” is so different in the African-American example.