On May 4, 1961, an interracial group of student activists under the auspices of the Congress of Racial Equality (CORE) departed Washington D.C. by bus to test local compliance throughout the Deep South with two Supreme Court rulings banning segregated accommodations on interstate buses and in bus terminals serving interstate routes. The "Freedom Riders" traveled with limited difficulty through North Carolina, Georgia, and South Carolina, but encountered violent resistance in Alabama. A mob of angry whites firebombed one of their buses outside Anniston, and riders were severely beaten in Birmingham and Montgomery.
Although injuries prevented many original participants from continuing, activists from the Student Nonviolent Coordinating Committee (SNCC) volunteered to ride in their place, and the reconstituted freedom riders traveled under federal protection to Mississippi where they were arrested and jailed. At the behest of the Kennedy administration, the Interstate Commerce Commission issued an order on November 1, 1961 banning segregation in all facilities under its jurisdiction.
The following December, a group of freedom riders traveled by train from Atlanta to Albany, Georgia, to test the ruling. Their arrest by local authorities helped to invigorate the Albany Movement, later regarded as one of the most significant developments of the civil rights era.