Alabama civil rights movement: Selma to Montgomery march, halted at the Edmund Pettus bridge (Tuesday, March 9, 1965) (Jack Rabin collection, Pennsylvania State University).

Members of the “Tallahassee Ten” arrested for unlawful assembly after asking to be served at a segregated restaurant in Tallahassee, Florida during the June 1961 Freedom Rides. The participants pictured here are Priscilla Stephens of CORE, and Rev. Petty D. McKinney, of Nyack, N.Y. (Florida memory).

Statue of a black man facing a policeman and a police dog, Birmingham, Alabama, drawing on an iconic photograph of Walter Gadsden (Dave Barger).

March on Washington (GPA Photo Archive/ NARA / United States Information Agency)

Participant in the Civil Rights March on Washington, D.C. with a Banner, 28 August 1963 (U.S. National Archives/ U.S. Information Agency)..

Freedom Riders hang anti-segregation signs from bus windows, 1961 (US Embassy The Hague, Flickr).

Civil Rights Mural, Atlanta, Georgia. (yooperann, Flickr).

Civil Rights Mural, Atlanta, Georgia. (TheRealEdwin, Flickr)

Civil Rights Mural, Atlanta, Georgia. (TheRealEdwin, Flickr)

Civil Rights Mural, Atlanta, Georgia. (TheRealEdwin, Flickr).

Lunch counter sit-in in Atlanta, 1960, organised by the Student Nonviolent Coordinating Committee: part of the movement that sparked similar protests across the South (Library of Congress / US Embassy, the Hague, Flickr).

Martin Luther King, speaking at interfaith civil rights rally, San Francisco, June 30 1964. (George Conklin, Flickr).

March in Harlem, New York City, following “Bloody Sunday” at Selma: March, 1965 (Stanley Wolfson, Library of Congress)

Selma, 1965: confrontation between police and marchers (Spider Martin / GPA Photo Archive).