President Lyndon B. Johnson played a significant role in Black history during the Civil Rights Movement in the 1960s. Johnson assumed the presidency after the assassination of President John F. Kennedy in 1963. He worked closely with civil rights leaders such as Martin Luther King Jr. and other activists to advance civil rights legislation in the United States.

In 1964, President Johnson signed the Civil Rights Act, which banned segregation in public places and prohibited discrimination based on race, color, religion, sex, or national origin. This landmark legislation was a major victory for the Civil Rights Movement and marked a turning point in the fight for racial equality in America.

Johnson also signed the Voting Rights Act in 1965, which aimed to eliminate barriers that prevented African Americans from exercising their right to vote. The Voting Rights Act had a profound impact on increasing African American political participation and representation in the years that followed.

Despite his contributions to advancing civil rights, Johnson's presidency was also marked by ongoing racial tensions, particularly surrounding the Vietnam War and urban unrest in cities across the country. However, his support for civil rights legislation solidified his legacy as a key figure in Black history and the fight for equality and justice.