As people gather today to commemorate the 50th anniversary of Martin Luther King Jr.'s "I Have a Dream" speech, we look at images from that event in 1963 and from tumultuous times during the civil rights movement.  King's pivotal speech addressing racism in this country was a crucial event in the history of civil rights and one that will always be remembered, not just on this milestone anniversary. -Leanne Burden Seidel ( 20 photos total)

US civil rights leader Martin Luther King Jr. waves from the steps of the Lincoln Memorial to supporters on the Mall in Washington, DC, during the "March on Washington" on Aug. 28, 1963. In 1963 King spoke in front of 250,000 people, explaining his wish for better relations between black and white Americans. His words were engraved on the steps of the monument where he spoke. (AFP/Getty Images)