Martin Luther King Jr. famously declared "I have a dream" during the March on Washington for Jobs and Freedom on August 28, 1963. This pivotal civil rights rally is one of the most significant moments in American history, attracting over 250,000 participants. King's speech called for an end to racism in the United States, emphasizing equality and justice. His vision of a society where children would be judged by their character rather than their skin color resonated deeply with the audience and has continued to inspire movements for civil rights and social justice to this day, cementing King's legacy as a key figure in American history.