Dr. Martin Luther King, Jr., and his demonstrators stream over an Alabama River bridge at the city limits of Selma, Ala., March 10, 1965, during a voter rights march. They were stopped and turned back a short time later. A federal judge had banned the march. (AP Photo/stf)

A federal marshal reads a court order halting a planned voter registration protest march at Selma, Ala., March 9, 1965. The order was read after Dr. Martin Luther King Jr. -- standing behind fellow marcher Andrew Young who had his arms folded -- led about 2,000 persons from a church to a bridge over the Alabama River. The marchers were allowed to continue over the bridge but then were turned back. The other civil rights activists standing with King and Young are not identified. (AP Photo)

Reporters talk to Dr. Martin Luther King Jr., center, as he and hundreds of demonstration marchers stream back to town after they were turned back from a planned civil rights voter registration march to Montgomery from Selma, Ala., March 9, 1965. (AP Photo)

Rev. Dr. Martin Luther King and Entertainer Sammy Davis Jr share a laugh in Davis' dressing room at New York's Majestic Theatre March 4 1965 after the Nobel Prize winning civil rights leader attended a performance of the Musical play

Dr. Martin Luther King, Jr., left, shakes hands with voter registration applicants waiting on a long line in Selma, Ala., on Feb. 16, 1965. At left is Rev. Fred Shuttlesworth. (AP Photo)

Dr. Martin Luther King Jr. shakes his fist during a speech in Selma, Ala., Feb. 12, 1965. King was engaged in a battle with Sheriff Jim Clark over voting rights and voter registration in Selma. (AP Photo/Horace Cort)

Dr. Martin Luther King, Jr., talks to newsmen in the White House lobby on Feb. 9, 1965, after conferences with President Johnson, Vice President Humphrey and Acting Attorney General Nicholas Katzenbach. King quoted President Johnson as saying the Justice Department is working on a bill to secure voting rights for Negroes. (AP Photo/HB)

Dr. Martin Luther King, Jr., talks to newsmen in the White House lobby on Feb. 9, 1965, after conferences with President Johnson, Vice President Humphrey and Acting Attorney General Nicholas Katzenbach. King quoted President Johnson as saying the Justice Department is working on a bill to secure voting rights for Negroes. (AP Photo/HB)

Dr. Martin Luther King, Jr., talks to newsmen in the White House lobby, Feb. 9, 1965, after conferences with President Johnson, Vice President Humphrey and Acting Attorney General Nicholas Katzenbach. King quoted President Johnson as saying the Justice Department is working on a bill to secure voting rights for Negroes. (AP Photo/HB)

Dr. Martin Luther King, Jr., talks to newsmen in the White House lobby on Feb. 9, 1965, after conferences with President Johnson, Vice President Humphrey and Acting Attorney General Nicholas Katzenbach. King quoted President Johnson as saying the Justice Department is working on a bill to secure voting rights for Negroes. (AP Photo/HB)

Dr. Martin Luther King Jr., is interviewed by newsmen as he left jail in Selma, Alabama on Feb. 5, 1965. The integration leader was arrested four days ago in a voter registration protest drive. (AP Photo/HC)

Dr. Martin Luther King Jr., center, leads a group of civil rights workers and Selma black people in prayer on Feb. 1, 1965 in Selma, Alabama after they were arrested on charges of parading without a permit. More than 250 persons were arrested as they marched to the Dallas County courthouse as part of a voter registration drive. (AP Photo/BH)

Civil rights leader Dr. Martin Luther King Jr. pauses in front of the Hotel Albert after leading a successful challenge this past week of Selma's historic segregation barriers, Jan. 22, 1965. Dr. King registered at the century-old hotel and then lead a march to register blacks to vote at the county courthouse. (AP Photo/Bill Hudson)

Dr. Martin Luther King Jr., center, speaks to a wildly cheering crowd of African American supporters, Jan. 2, 1965, Selma, Ala. King was calling for a new African American voter registration drive throughout Alabama and promising to

Dr. Martin Luther King Jr., center, speaks to a wildly cheering crowd of African American supporters, Jan. 2, 1965, Selma, Ala. King was calling for a new African American voter registration drive throughout Alabama and promising to

Jan 01, 1965 - Washington, DC, USA - The most famous leader of the American civil rights movement, a political activist, a Baptist minister, and was one of America's greatest orators, MARTIN LUTHER KING, JR. pictured with his wife CORETTA SCOTT KING. King became the youngest man to be awarded the Nobel Peace Prize in 1964. On April 4, 1968, Dr. King was assassinated in Memphis, Tennessee. In 1977, he was posthumously awarded the Presidential Medal of Freedom by Jimmy Carter. In 1986, Martin Luther King Day was established as a United States holiday. (Credit Image: ? KEYSTONE Pictures USA)/ eyevine

Dr. Martin Luther King Jr., this year's Nobel Peace Prize winner, talks to reporters at the White House, in Washington, D.C., on December 18, 1964, following a conference with U.S. President Johnson. King quoted the president as saying Johnson was determined to end discrimination in voting privileges. (AP Photo)

The Rev. Martin Luther King, Jr., left, receives the City of New York's Medallion of Honor from Mayor Robert Wagner in a City Hall ceremony, Dec. 17, 1964. His wife Coretta smiles at center. (AP Photo/Tony Camerano)

Dr. Martin Luther King, Jr., and his wife Coretta Scott King, dance Dec. 13, 1964, at the Malmen Hotel in Stockholm where he was a guest of honor on the one year anniversary festivals for the Republic of Kenya. King is this year's Nobel Peace Prize winner. (AP Photo/Reportagebild)

Martin Luther King from the ceremony on Dec. 10, 1964 in Norway at the convert hall the day of receiving the medal etc. together with Gunnar J. Jahn, the head of Norwegian Nobel Committee. (AP Photo)