Before Spain
Segregation would fuel a lot of the African Americans passions. Blacks would be confronted by forces of white supremacy, with groups like the KKK (Ku Klux Klan).
Black people were looking for places of escape. The communist government in Russia caught the eye of many black people. One famous black person by the name of Cyril Briggs thought very highly of the new foreign ideology. Brigg was the leader of an African American Brotherhood, that wanted to arm black men for self-defense and called for unity with poor whites to overthrow capitalism in the U.S. In 1924 Briggs would lead his follower to join the U.S. Communist Party.
This would be the start of something greater for blacks. Many other would also turn the U.S. Communist Party for inspiration and money support.