Reserved Power is the correct answer for this question
I believe A. I am not 100% sure but that is my best guess.
Many African Americans where still living in poverty, and when the Great Depression hit, many white employers fired around 50% of African American workers. At this time, the KKK was very active too.
Another thing was that certain workers were still living in harsh conditions, so civil rights emerged in acts like strikes.
“The proletarians have nothing to lose but their chains. ... Proletarians of All Countries, Unite!” These are the final three sentences of the Manifesto of the Communist Party, better known simply as the Communist Manifesto, published in 1848, and written the year before by Karl Marx and Frederick Engels.