Answer:
Martin Luther King, Jr., led a boycott of the Montgomery, Alabama, city bus system after Rosa Parks was arrested in 1955 for refusing to give up her seat to a white man. The African-American community set up car pools and informal taxi services to transport the protesters to and from work.
The boycott ended after the US Supreme Court declared segregation in public transportation unconstitutional in Browder v. Gayle, (1956). The decision led to the immediate desegregation of Montgomery buses, but many other cities resisted the Supreme Court's ruling.