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J. H. Lawson. People marching with signs to protest segregation at U.S. colleges and secondary schools, Houston, Texas, between 1939 and 1961. Prints and Photographs Division, Library of Congress
- 1900
- Booker T. Washington founded the National Negro Business League
- 1900
- James Weldon Johnson and brother J. Rosamond Johnson wrote “Lift Ev’ry Voice and Sing,” widely referred to as “the Negro national anthem”
- 1900–1906
- Blacks organized boycotts in every Southern state to protest segregated streetcars
- 1903
- W. E. B. Du Bois published The Souls of Black Folk
- 1905
- Niagara Movement organized by W. E. B. Du Bois and others in opposition to Booker T. Washington’s leadership
- 1906
- Three companies of black troops accused of waging a murderous raid in Brownsville, Texas, were denied a fair trial by court martial and dishonorably discharged by President Theodore Roosevelt
- 1906
- A five-day race riot in Atlanta killed at least twenty-seven, injured hundreds, and destroyed black-owned property
- 1908
- Bloody two-day race riot erupted in Springfield, Illinois, and destroyed the city’s black section
- 1909
- National Association for the Advancement of Colored People (NAACP) formed in New York City in response to the Springfield race riot
- 1909
- Nannie Helen Burroughs established the National Training School for Women in Washington, D.C.
- 1910
- The National Urban League founded in New York City
- 1910
- African American inventor and entrepreneur Madame C. J. Walker, generally considered the first black woman millionaire, started a hair care company for black women in Indianapolis
- 1911
- El Primer Congreso Mexicanista, the first large Mexican American civil rights conference, met in Laredo, Texas
- 1914–1918
- World War I
- 1914
- NAACP published an open letter to President Woodrow Wilson protesting segregation in federal agencies
- 1915
- Carter G. Woodson founded the Association for the Study of Negro Life and History
- 1916
- Representative Jeannette Rankin (R-MT) became the first woman elected to Congress
- 1917
- Marcus Garvey established the American branch of the Universal Negro Improvement Association (UNIA) in Harlem
- 1917
- Harlem Renaissance began
- 1917
- NAACP led a “Silent March” of 10,000 black New Yorkers down Fifth Avenue to protest the East St. Louis race riot
- 1919
- NAACP published Thirty Years of Lynching, 1889–1918, as part of an antilynching campaign
- 1919
- Summer and early fall race riots erupted in twenty-five cities across the U.S.; later called “Red Summer”
- 1922
- U.S. House of Representatives passed the NAACP-supported Dyer antilynching bill; defeated by Southern Democrats in the Senate
- 1925
- A. Philip Randolph organized the Brotherhood of Sleeping Car Porters Union
- 1926
- Carter G. Woodson inaugurated “Negro History Week,” later extended to Black History Month
- 1928
- Octaviano Larrazolo (R-NM) became the first Latino U.S. Senator
- 1929
- Oscar DePriest (R-IL) elected as the first black congressman since Reconstruction
- 1929
- NAACP-supported “Don’t Buy Where You Can’t Work” economic boycott movement began with the goal of securing better jobs for African Americans
- 1931
- A filibuster by Southern Democrats defeated the NAACP-supported Costigan-Wagner antilynching bill in the Senate
- 1931
- Nine black men were wrongfully charged and convicted of the rape of two white women in Scottsboro, Alabama; the accused chose the Communist Party-supported International Labor Defense (ILD) rather than the NAACP to represent them
- 1932
- Hattie Wyatt Caraway (D-AR) became the first woman elected to the U.S. Senate
- 1933
- Joint Committee on National Recovery formed to represent African Americans during the first 100 days of President Franklin Roosevelt’s administration
- 1934
- Southern Tenant Farmers’ Union, an interracial organization, formed to advocate for the fair treatment of sharecroppers and tenant farmers under the Agricultural Adjustment Administration (AAA)
- 1935
- National Council of Negro Women founded
- 1935
- National Negro Congress (NNC), led by A. Philip Randolph, called for the unionization of black workers, desegregation, and the protection of migrant workers
- 1935
- Congress of Industrial Organizations (CIO) formed, espousing racial egalitarian rhetoric but allowing discriminatory practices
- 1936
- Jesse Owens defied Nazi racist propaganda by winning four gold medals at the Olympic games in Berlin
- 1937
- The Brotherhood of Sleeping Car Porters signed a collective bargaining agreement with the Pullman Company, the first such agreement between a black union and a major American company
- 1938
- African American choreographer and dancer Katherine Dunham formed her own dance company
- 1939
- African American contralto Marian Anderson sang in concert at the Lincoln Memorial before an integrated audience of 75,000
- 1939
- NAACP Legal Defense and Educational Fund formed