Martin Luther King Jr. was the prominent figure in the American Civil Rights Movement renowned for his "I Have a Dream" speech. Delivered during the 1963 March on Washington, King's address articulated a vision for a racially integrated and harmonious America. He emphasized equality and justice, calling for an end to racism and discrimination against African Americans. His speech is celebrated for its emotional power and masterful use of rhetorical devices, ultimately becoming a symbol of the struggle for civil rights. King's work and legacy continue to inspire movements advocating for social justice and equality around the world.