The Civil Rights Movement in the United States primarily took place from 1954 to 1968. It was a social movement aimed at abolishing legalized racial segregation, discrimination, and disenfranchisement, especially affecting African Americans. The movement's modern phase started in 1954 with the Supreme Court's Brown v. Board of Education decision that declared racial segregation in public schools unconstitutional. It included major events such as the Montgomery Bus Boycott in 1955, the Little Rock Nine school integration in 1957, the March on Washington in 1963, and the passage of key legislation including the Civil Rights Act of 1964 and the Voting Rights Act of 1965. The movement is generally regarded as concluding around 1968, the year Martin Luther King Jr. was assassinated, although the broader struggle for civil rights and equality has continued since then.