| 1955-08-28 | Emmett Till Murdered in Mississippi After Accusation from White Woman
3 src Roy Bryant · J.W. Milam · Mamie Till · Tallahatchie County Sheriff | | confirmed |
| 1955-05-31 | Brown II Orders Desegregation with "All Deliberate Speed," Enabling Decade of Resistance
3 src Earl Warren · U.S. Supreme Court · NAACP Legal Defense Fund · Thurgood Marshall · +1 |
| confirmed |
| 1954-07-11 | White Citizens' Councils Pioneer Economic Collective Punishment in Yazoo City Mississippi | | |
| 1954-06-17 | Operation Wetback: Mass Deportation Campaign Removes Over One Million Ethnic Mexicans | | |
| 1954-05-17 | Brown v. Board of Education Supreme Court Decision Declares School Segregation Unconstitutional
3 src Earl Warren · Thurgood Marshall · NAACP Legal Defense Fund · U.S. Supreme Court | | confirmed |
| 1953-08-13 | Eisenhower Executive Order 10479 Creates Committee on Government Contracts, Weak Anti-Discrimination Enforcement
3 src Dwight D. Eisenhower · Richard Nixon · Government Contract Committee · NAACP | | confirmed |
| 1948-07-26 | Executive Order 9981 Desegregates U.S. Military - Truman Repudiates 170 Years of Discrimination
3 src Harry S. Truman · Isaac Woodard · President's Committee on Equality of Treatment and Opportunity · Omar Bradley · +1 | | confirmed |
| 1944-07-17 | Port Chicago Disaster and Black Sailors Mutiny Conviction
3 src U.S. Navy · Thurgood Marshall · NAACP · Port Chicago 50 · +1 |
| confirmed |
| 1944-04-03 | Smith v. Allwright: Supreme Court Strikes Down White Primaries, Opening Democratic Party to Black Voters
3 src U.S. Supreme Court · Stanley Reed · Thurgood Marshall · NAACP Legal Defense Fund · +2 |
| confirmed |
| 1943-06-20 | Detroit Race Riot Exposes Housing Segregation and War Production Tensions
3 src Detroit Police Department · Federal troops · Detroit housing authority · War production workers · +1 | | confirmed |
| 1931-03-03 | Harlon Carter Age 17 Shoots and Kills 15-Year-Old Ramón Casiano in Laredo Texas | | |
| 1923-01-01 | Rosewood Massacre Destroys Entire Black Florida Town Following False Accusation | | |
| 1921-06-01 | Tulsa Race Massacre Destroys Black Wall Street in Largest Single Act of Racial Collective Punishment | | |
| 1919-07-27 | Red Summer: Chicago Race Riot Erupts as White Mobs Attack Black Neighborhoods, 38 Killed
3 src Chicago Police Department · Irish American athletic clubs · Black Great Migration communities · Governor Frank Lowden · +1 |
| confirmed |
| 1918-01-28 | Porvenir Massacre: Texas Rangers and Army Execute 15 Unarmed Mexican American Men | | |
| 1917-11-05 | Buchanan v. Warley: Supreme Court Strikes Down Racial Zoning, Property Rights Trump Civil Rights
3 src Supreme Court of the United States · NAACP · Moorfield Storey · Louisville, Kentucky |
| confirmed |
| 1915-06-21 | Guinn v. United States: Supreme Court Strikes Down Grandfather Clauses as Fifteenth Amendment Violation
3 src U.S. Supreme Court · Chief Justice Edward White · Oklahoma Legislature · NAACP |
| confirmed |
| 1913-04-11 | Wilson Administration Segregates Federal Government: Jim Crow Comes to Washington
3 src President Woodrow Wilson · Postmaster General Albert Burleson · Treasury Secretary William McAdoo · NAACP · +2 | | confirmed |
| 1912-10-01 | Forsyth County Georgia Ethnic Cleansing Drives Out Entire Black Population | | |
| 1910-01-01 | Texas Rangers Conduct "La Matanza" Killing 300-5,000 Ethnic Mexicans Along Border | | |
| 1898-11-10 | Wilmington Coup d'État Overthrows Elected Biracial Government Through Mass Racial Violence | | |
| 1892-06-25 | Ida B. Wells Publishes "Southern Horrors" Documenting Lynching as Collective Punishment System | | |
| 1871-04-20 | Congressional Hearings on KKK Terrorism During Reconstruction Reveal Systematic Collective Punishment | | |
| 1848-07-19 | Seneca Falls Convention Launches Women's Rights Movement with Declaration of Sentiments
3 src Elizabeth Cady Stanton · Lucretia Mott · Frederick Douglass · Jane Hunt · +2 | | confirmed |