The Civil Rights Movement started in the 1950s as both black and white Americans took action against racial inequalities. Several events contributed to growing unrest, including African Americans serving in World War II but still facing discrimination at home, the murder of Emmett Till in 1955, and changes to laws regarding racial segregation. Key early victories for the movement included the 1954 Brown v. Board of Education Supreme Court ruling declaring racial segregation in public schools unconstitutional, the 1955 Montgomery Bus Boycott protesting segregation on public buses, and the 1957 desegregation crisis in Little Rock, Arkansas.