The famous speech that Martin Luther King Jr. delivered in 1963 is known as the "I Have a Dream" speech. It was presented during the March on Washington for Jobs and Freedom on August 28, 1963. In his speech, King articulated his vision of a racially integrated and harmonious America, where people would be judged by their character rather than their skin color. His powerful oratory and commitment to nonviolent protest became seminal in the Civil Rights Movement, advocating for equality, justice, and the end of racial segregation in the United States.