The historical figure who famously said, "I have a dream" is Martin Luther King Jr. He delivered this iconic line during his speech at the March on Washington for Jobs and Freedom on August 28, 1963. King’s dream emphasized equality and freedom for all Americans, particularly addressing the struggles faced by African Americans due to racial segregation and discrimination. His eloquent vision called for an end to racism and highlighted the need for civil rights and justice. This speech became a significant moment in the American Civil Rights Movement and continues to inspire movements for equality today.