A police officer on a motorcycle rolls his machine in front of civil rights leaders Rev. Ralph Abernathy, left, and Rev. Martin Luther King Jr., center, as they lead a march protesting against segregation, in Birmingham, Ala., on April 12, 1963. (AP Photo)

Rev. Martin Luther King Jr, integration campaigner, appears before a chanting audience in Birmingham, Alabama, April 6 1963. King proclaimed that all men should join him in wearing overalls until Easter. The challenge went out as demonstrations continued over segregation of city facilities. (AP Photos)

Dr. Martin Luther King Jr. and his wife, Coretta Scott King, sit with three of their four children in their Atlanta, Ga, home, on March 17, 1963. From left are: Martin Luther King III, 5, Dexter Scott, 2, and Yolanda Denise, 7. (AP Photo)

PHOTO: EAST NEWS/AFP PHOTO (FILES) US clergyman and civil rights leader Martin Luther King (C), 27, and his wife, Coretta Scott King, emerge 23 March 1956 from Montgomery Court House, following his trial on charges of conspiring to boycott segregated city buses. King was found guilty and sentenced to a 386 days of hard labor and fined $1,000 USD. King immediately appealed. Martin Luther King was assassinated on 04 April 1968 in Memphis, Tennessee.

PHOTO: EAST NEWS/AFP PHOTO Coretta Scott King (5th-R) leads a "March on Memphis" 09 April 1968, five days after the assassination of her husband, US clergyman and civil rights leader Martin Luther King. On her right, her daughter, Yolanda, walks with her sons Martin and Dexter; on her left appear King's successor, the Rev. Ralph Abernathy, and Andrew Young, later US ambassador to the United Nations and mayor of Atlanta. Martin Luther King was assassinated 04 April 1968 in Memphis, Tennessee.

A group of clergymen from the northern states applaud integration leader Martin Luther King as he speaks at a church in Albany, Ga., August 28, 1962. (AP Photo)

Coretta Scott King, wife of jailed integration leader Rev. Martin Luther King, Jr., and their three children pack a picnic basket with at their Albany, Ga. temporary home, August 5, 1962. This is the 10th day the Atlanta pastor has spent in jail for his integration activity. From left are: Martin Luther King III, 4; Yolanda Denise King, 6; and Dexter Scott King, 18 months old. (AP Photo)

During months of local anti-segregation campaigns led by the SCLC in Albany, Georgia, Reverend Dr. Martin Luther King Jr. is arrested by Albany's Chief of Police, Laurie Pritchett, after praying at City Hall, on July 27, 1962. (AP Photo)

Martin Luther King, Jr., Atlanta minister and leader of the desegregation movement, left, talks to a packed church gathering about his

The Rev. Martin Luther King, JR., whose Ebenezer Baptist church of Atlanta, Ga., was admitted to membership in the predominately white American Baptist Convention in session in Philadelphia on May 25, 1962, gestures as he said: ??sThere probably is some arming taking place among Negroes in Birmingham??? at the present time. Dr. King, who addressed the Baptist group, branded Birmingham as the most difficult big city in race relations in the United States. (AP Photo/WGI)

Rev. Martin Luther King Jr., center, is greeted by Dean Ernest Gordon, of the Princeton University Chapel, right, on the Chapel steps, with Dr. Karl Barth, well-known Swiss theologian and philosopher, April 29, 1962, Princeton, New Jersey. Rev. King preached a sermon at the morning service. Dr. Barth is expected to deliver sermon at evening service. (AP Photo/Bill Ingraham)

Rev. Martin Luther King Jr., center, is greeted by Dean Ernest Gordon, of the Princeton University Chapel, right, on the Chapel steps, with Dr. Karl Barth, well-known Swiss theologian and philosopher, April 29, 1962, Princeton, New Jersey. Rev. King preached a sermon at the morning service. Dr. Barth is expected to deliver sermon at evening service. (AP Photo/Bill Ingraham)

Oct 28, 1961; London, England, UK; Reverend MARTIN LUTHER KING arriving at London Airport on October 28, 1961. (Credit Image: ? KEYSTONE Pictures USA)/ eyevine

Integration leader Martin Luther King talks to the press outside the White House after he presented President Kennedy with a proposal for an executive order to declare segregation unconstitutional under the 14th amendment, Washington, October 16, 1961. (AP Photo)

Rev. Dr. Martin Luther King, Jr., of Atlanta, Ga., left, asked that Pres. John F. Kennedy issues an executive order declaring all forms of racial segregation illegal at a press conference, June 5, 1961, New York. He also said that a speaking trip to the South by the President would be welcomed by many White persons as well as African Americans. (AP Photo)

Freedom riders stand at ticket counter of the bus station in Montgomery, Alabama, May 24, 1961 as they purchase tickets to continue their ride through the south. At center is integration leader Rev. Martin Luther King. (AP Photo)

Freedom riders stand at ticket counter of the bus station in Montgomery, Alabama, May 24, 1961 as they purchase tickets to continue their ride through the south. At center is integration leader Rev. Martin Luther King. (AP Photo)

Rev. Martin Luther King, Jr., is pictured at an integration rally in Montgomery, Ala., May 21, 1961. (AP Photo/Horace Cort)

Dr. Martin Luther King is given a welcome home kiss by his wife Coretta, upon his return to Atlanta following his release from Reidsville State Prison on bond, on October 27, 1960. King's children, Yolanda, 5, and Martin Luther III, 3, join the welcome celebration. (AP Photo)

Dr. Martin Luther King Jr. under arrest by Atlanta Police Captain R.E. Little, left rear, passes through a picket line in front of a downtown department store on Oct. 9, 1960. with King is another demonstration leader, Lonnie King and an unidentified woman. The integration leader was among the 48 African-Americans arrested following demonstrations at several department and variety stores protesting lunch counter segregation. (AP Photo/stf)