"Communists believed that organizing the working class would work only if white workers realized that their liberation, too, was bound up with the fate of black workers. Facing this threat, anti-Communists and segregationists worked hard to sustain the fractures. They blamed Communists for fomenting "race mixing," evoking sexualized fears that social equality would mean black men having sex with white women--the very fears that put the Scottsboro Boys on trial. In turn, when black people agitated for civil rights, the Bull Connors of the world called such demands Communist-inspired, returning to the same narrative of dangerous outsiders."

"The unexpected afterlife of American communism" (NYT)