Malcolm X during a rally in New York, New York on July 27, 1963 (Montgomery, Alabama police once jailed King for driving 30 miles per hour in a 25-mile-per-hour zone.) While behind bars in 1963, King penned his famous Letter From Birmingham Jail, which included the famous quote, "Injustice anywhere is a threat to justice everywhere." Throughout his life, the civil rights leader was reportedly imprisoned nearly 30 times for acts of civil disobedience, among other unreasonable charges. The following year, the Baptist minister became the youngest person to win the Nobel Peace Prize at just 35 years old.
was instrumental in executing nonviolent protests, such as the Montgomery Bus Boycott and the 1963 March on Washington, where he delivered his iconic "I Have a Dream" speech. Widely recognized as the most prominent figure of the civil rights movement, Martin Luther King Jr. Photo: Michael Ochs Archives/Getty Images delivers a speech to a crowd of approximately 7,000 people on May 17, 1967, at UC Berkeley's Sproul Plaza in Berkeley, California.