Days of the Montgomery, Ala. Bus Boycott, led by Dr. Martin Luther King, Jr. and the Montgomery Improvement Association.

352 U.S. 903
Supreme Court case of William A. Gayle v. Aurelia S . Browder, 1956, in which the Court ruled segregation on public buses unconstitutional.

Years after Gayle v. Browder that the Supreme Court ruled segregation illegal in city parks in the case of New Orleans City Park Improvement Association v. Mandeville Detiege, 358 U.S. 54 (1958).

Amendment number that guarantees citizens, regardless of race, the right to vote (Feb. 1870).

The year Vermont became the first state to abolish slavery, prohibiting the institution in the state constitution.

Homes, churches and businesses destroyed in the mostly black Greenwood area of Tulsa, Okla., in June of 1921 after white mobs concluded a three-day race riot which left 250 dead.