How did african american organizations fight discrimination in american society of the 1920s?

During the 1920s, it was a turning point for the African-American people because there was a chance for them to escape the south cities to north cities in order to avoid the racial discrimination. This Great Migration that happened, had greatly improved the lives of the African American peoplemostly because they were given social freedom and were free to have opportunities.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.