In 1963, with the help of Bayard Rustin and A. Philip Randolph, King led the massive March on Washington for Jobs and Freedom and gave his famous "I Have a Dream" address. Over two hundred and fifty thousand people gathered outside the Lincoln Memorial to hear the now-iconic speech.
The Civil Rights Act of 1964 was passed just a year later, prohibiting racial discrimination in school and the work place and outlawing racial segregation in public. The same year, King became the youngest person to win the Nobel Peace Prize.
Take a look at the life of Martin Luther King Jr. below:
Martin Luther King, Jr.
This day in history: Martin Luther King Jr. is born
C8MG9A Martin Luther King, Jr.. Image shot 1963. Exact date unknown.
Dr. Martin Luther King, Jr.
Martin Luther King and Malcolm X
MONTGOMERY, AL - MAY 1956: Civil rights leader Reverend Martin Luther King, Jr. relaxes at home in May 1956 in Montgomery, Alabama. (Photo by Michael Ochs Archives/Getty Images)
MONTGOMERY, AL - MAY 13: Civil rights leader Reverend Martin Luther King, Jr. speaks with people after delivering a sermon on May 13, 1956 in Montgomery, Alabama. (Photo by Michael Ochs Archives/Getty Images)
MONTGOMERY, AL - MAY 1956: Civil rights leader Reverend Martin Luther King, Jr. relaxes at home with his family in May 1956 in Montgomery, Alabama. (Photo by Michael Ochs Archives/Getty Images)
American civil rights leader Dr. Martin Luther King, Jr. (1929 - 1968) sits on a couch and speaks on the telephone after encountering a white mob protesting against the Freedom Riders in Montgomery, Alabama, May 26, 1961. (Photo by Express Newspapers/Getty Images)
Martin Luther King Jr, at a press conference after meeting with President Johnson at the White House to discuss civil rights, Washington DC, December 3, 1961. (Photo by Warren K. Leffler/Underwood Archives/Getty Images)
Civil Rights leaders Fred Shuttlesworth (left), Martin Luther King Jr (center), and Ralph Abernathy (right) attend a funeral for victims of the 16th Street Church bombing in Birmingham, Alabama, 1963. The September 15, 1963 bombing killed four young African-American girls. (Photo by Declan Haun/Chicago History Museum/Getty Images)
President Lyndon B Johnson (1908 - 1973) discusses the Voting Rights Act with civil rights campaigner Martin Luther King Jr. (1929 - 1968). The act, part of President Johnson's 'Great Society' program trebled the number of black voters in the south, who had previously been hindered by racially inspired laws, 1965. (Photo by Hulton Archive/Getty Images)
MONTGOMERY- MARCH 25: Dr. Martin Luther King, Jr. seen close from the rear, speaking in front of 25,000 civil rights marchers, at the conclusion of the Selma to Montgomery march in front of Alabama state capital building on March 25, 1965. In Montgomery, Alabama. (Photo by Stephen Somerstein/Getty Images)
MONTGOMERY, AL - MARCH 25: Dr. Martin Luther King, Jr. speaking before crowd of 25,000 Selma To Montgomery, Alabama civil rights marchers, in front of Montgomery, Alabama state capital building. On March 25, 1965 in Montgomery, Alabama. (Photo by Stephen F. Somerstein/Getty Images)
African-American man holding Martin Luther King Jr flag - Washington, DC, USA
The Martin Luther King Jr., memorial on the National Mall in Washington, D.C.
The Rev Al Sharpton speaking at a Dr, Martin Luther King jr Day rally.
Rev. Dr. Martin Luther King, Jr. meeting with US President Lyndon B. Johnson in the Oval Office of the White House December 3, 1963 in Washington, DC.
Rev. Dr. Martin Luther King, Jr. meeting with US President Lyndon B. Johnson in the Cabinet Room of the White House March 18, 1966 in Washington, DC.
Funeral of reverend Martin Luther King Jr.
Girl Scouts in Martin Luther King Jr Day Celebration
Martin Luther King Jr Memorial Washington DC dc12 national park monument near National Mall
Controversial paraphrased quote on the Martin Luther King Jr. Memorial.
Martin Luther King, Jr. with wife Coretta Scott King
MLK with Labor Unions
Martin Luther King, Jr. during the March on Washington
Martin Luther King Jr. at the 'Pacem in Terris' Peace Conference
Martin Luther King, Jr. arriving at London Airport
Tourists visiting the Martin Luther King Jr. Memorial in Washington, D.C., USA
Martin Luther King, Jr., T-Shirt commemorating the 50th Anniversary of the 1963 March on Washington, D.C., USA
Martin Luther King Jr Day Rally
India Martin Luther King postage stamp, cancelled
Dr. Martin Luther King, Jr. (right), President of the Southern Christian Leadership Conference with Mathew Ahmann (center), Executive Director of the National Catholic Conference for Interrracial Justice during the March on Washington for Jobs and Freedom August 28, 1963 in Washington, DC.
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On April 4, 1968 at the age of 39, Martin Luther King Jr. was assassinated in Memphis, Tennessee while supporting the Memphis Sanitation Strike. His legacy is celebrated in America as a federal holiday on third Monday of January each year.