Multiple choice Which best describes the significance of Martin Luther King, Jr.? an influential Civil Rights leader; wrote "I Have a Dream" a Civil Rights leader who called for violent action a televangelist first black justice on the Supreme Court Reveal answer Fill a bubble to check yourself A Correct answer Explanation Martin Luther King, Jr. was the primary leader of the nonviolent Civil Rights Movement and delivered the famous 'I Have a Dream' speech during the March on Washington.