President Lyndon B. Johnson played a significant role in advancing civil rights for African Americans during his presidency. He signed into law the Civil Rights Act of 1964, which outlawed discrimination based on race, color, religion, sex, or national origin. This landmark piece of legislation was a major step forward in the struggle for racial equality in the United States.

Johnson also signed the Voting Rights Act of 1965, which aimed to overcome legal barriers at the state and local levels that prevented African Americans from exercising their right to vote. This legislation was crucial in empowering African Americans to participate in the political process and have a voice in electing their representatives.

Overall, President Johnson's support for civil rights legislation marked a turning point in the fight for racial equality in America and solidified his legacy as a key figure in Black history.