'Hammer and Hoe: Alabama Communists during the Great Depression' by Robin D.G. Kelley

The southern US used to be ground zero for communist movements in the US during the 20s/30s primarily because of the solidarity between racial lines of the working class when everywhere else was hostile towards Black folks. The Black community took the teachings of Marx and Lenin and blended it with their own influence from their lived experiences and essentially created a huge movement. Really interesting book that I don't see mentioned very often and it's a cool piece of Black history since it is Black history month.