Passage: Protests started by Barbara Rose Johns in 1951 in Farmville against segregated schools led to the lawsuit Davis v. County School Board of Prince Edward County. This case, filed by Richmond natives Spottswood Robinson and Oliver Hill, was decided in 1954 with Brown v. Board of Education, which rejected the segregationist doctrine of "separate but equal". But, in 1958, under the policy of "massive resistance" led by the influential segregationist Senator Harry F. Byrd and his Byrd Organization, the Commonwealth prohibited desegregated local schools from receiving state funding.The civil rights movement gained many participants in the 1960s. It achieved the moral force and support to gain passage of national legislation with the Civil Rights Act of 1964 and the Voting Rights Act of 1965. In 1964 the United States Supreme Court ordered Prince Edward County and others to integrate schools. In 1967, the Court also struck down the state's ban on interracial marriage with Loving v. Virginia. From 1969 to 1971, state legislators under Governor Mills Godwin rewrote the constitution, after goals such as the repeal of Jim Crow laws had been achieved. In 1989, Douglas Wilder became the first African American elected as governor in the United States.The Cold War led to the expansion of national defense government programs housed in offices in Northern Virginia near Washington, D.C., and correlative population growth. The Central Intelligence Agency in Langley was involved in various Cold War events, including as the target of Soviet espionage activities. Also among the federal developments was the Pentagon, built during World War II as the headquarters for the Department of Defense. It was one of the targets of the September 11 attacks; 189 people died at the site when a jet passenger plane was flown into the building.

Question: When did a lot of people join the civil rights movement?
1960s