American folk singer and activist Pete Seeger (left) adopted and helped popularize "We Shall Overcome" by teaching the song at rallies and protests. Here he sings with activists in Greenwood, Miss., in 1963.
Adger Cowans/Getty Images
A white heckler arrested during an anti-segregation demonstration in Lexington, Ky., is hustled into a police car in August 1963. Forty years later, the Lexington Herald-Leader ran a correction apologizing for the newspaper's lack of coverage of the civil rights movement.
Clarence B. Jones this month in Palo Alto, Calif. As Martin Luther King Jr.'s attorney and adviser, Jones contributed to many of King's speeches, including his famous speech at the March on Washington in 1963.
Norbert von der Groeben/Reuters/Landov
Joseph Burden (third row, third from right) with his graduating class at Washington, D.C.'s Metropolitan Police Department training academy in 1960. Every officer on the force was required to work the day of the March on Washington.
Courtesy of Joseph Burden