What was Martin Luther King Jr.'s best-known speech?

Martin Luther King Jr.'s best-known speech is the 'I Have a Dream' speech, delivered during the March on Washington for Jobs and Freedom on August 28, 1963. This speech became one of the defining moments of the civil rights movement and is celebrated for its powerful call for racial equality and justice, expressing hopes for a nation where individuals are judged by their character rather than their skin color^[1][4][6].

The speech was prompted by a crowd of about 250,000 people gathered at the Lincoln Memorial, and it features the famous refrain 'I have a dream,' which King used to articulate his vision for a better America^[2][5][6].