First wave of the Great Migration beginsJan 1, 1910Labels: First Great, Northern industrialNational ArchivesGilder Lehrman
East St. Louis massacre targets Black workersJul 2, 1917Labels: East St, Labor conflictBritannicaEJI Calendar
Elaine massacre attacks Black tenant farmer organizingSep 30, 1919Labels: Elaine massacre, Arkansas farmersWikipediaNational Archives
Immigration Act restricts new foreign labor supplyMay 26, 1924Labels: Immigration Act, Johnson ReedHistory comWikipedia
Brotherhood of Sleeping Car Porters foundedAug 25, 1925Labels: Brotherhood of, Pullman portersWikipediaCN Traveler
Great Mississippi Flood intensifies labor displacementApr 1, 1927Labels: Great Mississippi, Displacement campsBritannicaNational Archives
Scottsboro Boys arrests highlight Jim Crow injusticeMar 25, 1931Labels: Scottsboro Boys, Alabama justiceHISTORYPBS
National Industrial Recovery Act expands bargaining rightsJun 16, 1933Labels: National Industrial, Section 7National ArchivesNLRB History
Harlem race riot exposes Depression-era inequalityMar 19, 1935Labels: Harlem riot, HarlemBritannicaHISTORY
National Labor Relations Act establishes NLRBJul 5, 1935Labels: Wagner Act, NLRBNational ArchivesNLRB History
Fair Labor Standards Act sets wage-hour floorsJun 25, 1938Labels: Fair Labor, FLSADOL HistoryWikipedia
First Great Migration period closes around 1940Jan 1, 1940Labels: First Great, 1940 milestoneNational ArchivesGilder Lehrman