Discuss the turmoil experienced either by labor, african americans, or radicals between 1918-1920 and how it turned americans against progressive reform.

All 3 experienced shifts in working conditions or jobs available with WWI ending. 

African Americans were brought to the North to fill jobs and whites were unhappy to see blacks in their jobs. This led to Red Summer, a series of riots through the US between blacks and whites. This turned people from helping others to now becoming active nativists in hate groups like the KKK.

For labor, unions were put on hold during the war and hoped to gain wages and conditions with the war ending. Union measures began again but the experience of war and the rising fear of foreigners led to union members being associated with anarchists and acts of terror. The country moved to less regulation of the economy and became pro-business again. 

For radicals, many fell into the same category as unions but also movements for rights like the women's movement were shut down after WWI. Obtaining some rights were seen as enough and the country aimed to unite under a banner of isolationism and "normalcy".