Civil rights leader Reverend Martin Luther King, Jr. delivers a speech to a crowd of approximately 7,000 people on May 17, 1967 at UC Berkeley's Sproul Plaza in Berkeley, California. (Photo by Michael Ochs Archives/Getty Images)
Civil rights leader Reverend Martin Luther King, Jr. delivers a speech to a crowd of approximately 7,000 people on May 17, 1967 at UC Berkeley's Sproul Plaza in Berkeley, California. (Photo by Michael Ochs Archives/Getty Images)