In this June 6, 1966 file photo, civil rights activist James Meredith pulls himself across Highway 51 after being shot in Hernando, Miss. Meredith, who defied segregation to enroll at the University of Mississippi in 1962, completed the march from Memphis, Tenn., to Jackson, Miss., after being treated for his wounds. (Photo by Jack Thornell/AP Photo)





In this June 9, 1966 file photo, civil rights activists led by Dr. Martin Luther King stretch out along Highway 51 south near Senatobia, Miss., on a march to the capital, Jackson, started by James Meredith. The March Against Fear helped many find a voice to protest the injustices of the day. (Photo by AP Photo)





In this June 23, 1966 file photo, Mississippi Highway Patrolmen and Canton Police officers wearing gas masks, foreground, advance after firing tear gas into one of the Meredith marchers' tents in Canton, Miss. The action took place in a schoolyard which the civil rights demonstrators chose as a campsite after being turned away earlier. (Photo by Charles Kelly/AP Photo)





In this June 7, 1966 file photo, Mississippi Highway Patrolmen grapple with black marchers accompanying the Rev. Martin Luther King on a march along U.S. 51 south of Hernando, Miss. Thousands joined a march across Mississippi, started by James Meredith, to challenge a system that condoned violence against black people and suppressed their rights – issues still reverberating in national debates about police violence 50 years later. (Photo by AP Photo)





In this June 11, 1966 file photo, a girl claps as she sits on a fellow marcher's shoulder as the Meredith March moves along U.S. 51 near Batesville, Miss. James Meredith started the march from Memphis, Tenn., to Jackson, Miss., to encourage black people to overcome a fear of violence and to encourage them to register to vote. (Photo by AP Photo)





In this June 7, 1966 file photo, Mississippi Highway Patrolmen shove the Rev. Martin Luther King and members of his marching group off the traffic lane of Highway 51 south of Hernando, Miss. King, Student Non-Violent Coordinating Committee leader Stokely Carmichael (head visible at upper right) and other civil rights leaders had taken up the march begun by James Meredith. (Photo by AP Photo)





In this Sunday, June 26, 1966 file photo, thousands of civil rights marchers assemble for the last leg of the Mississippi March from Tougaloo College north of Jackson, Miss., to the Capitol. In the front row, from left are the Rev. Ralph Abernathy, Juanita Abernathy, Mrs. Coretta Scott King, Dr. Martin Luther King, James Meredith, Stokely Carmichael of the Student Non-Violent Coordinating Committee (looking back) and Floyd B. McKissick, national director of the Congress of Racial Equality. (Photo by Charles Kelly/AP Photo)





In this June 26, 1966 file photo, James Meredith, lower left, whose Mississippi March began in Memphis, Tenn., on June 5 and was interrupted when he was shot the following day, addresses a mass rally of civil rights demonstrators from the Mississippi State Capitol grounds in Jackson, Miss. The March Against Fear in the summer of 1966 helped many find a voice to protest the injustices of the day, setting an example for contemporary movements such as Black Lives Matter, five decades later. (Photo by AP Photo)





Activist Gloria Richardson pushes by the National Guard in Cambridge, Md. in June, 1963. (Photo by Fred Ward/Award Agency)