_{Top Photo - African American demonstrators outside the White House in 1965, protesting police brutality against civil rights demonstrators in Selma, Alabama. Photo credit: Warren K. Leffler / Library of Congress. Side Image 1 - Picking cotton in the Mississippi Delta, near Clarksdale, Mississippi Delta, 1939. Photo credit: Marion Post Wolcott, Library of Congress; Side Image 2 - Graball Landing, along the Tallahatchie River. Photo credit: © Ismael Gama Jr./NPCA; Side Image 3 - Mamie Till-Mobley, mother of Emmett Till, speaks to reporters about her son's death in 1955. Photo credit: © Afro Newspaper/Gado/Getty; Side Image 4 - The courtroom in the Tallahatchie County Courthouse where the trial of Emmett Till's murderers took place in 1955. Photo credit: © Ismael Gama Jr./NPCA; Side Image 5 - The Woolworth drug store in Greensboro where four Black students from North Carolina A&T College sat at an all-whites lunch counter in 1960. Photo credit: Dreamstime/Natalie Schorr; Side Image 6 - A Freedom Riders bus that had been firebombed by the KKK on Mother's Day in 1961 in Alabama. Photo credit: NPS; Side Image 7 - An interracial group of people at a demonstration organized by the Congress of Racial Equality (CORE) against discrimination and in response to the death of Medgar Evers in front of The White House, Washington, D.C. Photo credit: Warren K. Leffler/Library of Congress; Side Image 8 - 16th St. Baptist Church in Birmingham, Alabama. Photo credit: Dreamstime/Ritu Jethani; Side Image 9 - The Edmund Pettus Bridge, where a peaceful civil rights demonstration in 1965 turned violent. Photo credit: NPS; Side Image 10 - Martin Luther King and Malcolm X after King's press conference at the U.S. Capitol about the Senate debate on the Civil Rights Act of 1964. Photo credit: Marion S. Trikosko/Library of Congress; Side Image 11 - Statue of Dr. Martin Luther King Jr. and Emmett Till at the Dr. Martin Luther King Jr. Cultural Center and Museum in Pueblo, Colorado. Photo credit: Carol M. Highsmith/Library of Congress; Side Image 12 - Graball Landing sign, Mississippi. Photo credit: © Ismael Gama Jr./NPCA. Bottom photo - Martin Luther King Jr., Memorial. Photo credit: Al_HikesAZ, CC BY-NC 2.0.}