Profiles four African-American photographers who captured moments from the civil rights movement. While their efforts are often overshadowed by those of demonstrators and speech makers, these men with cameras put themselves in harm's way to show America the reality of discrimination and protest. Among the famous snapshots examined are Marian Anderson singing at the Lincoln Memorial in 1939, Thurgood Marshall trying civil rights cases in the 1950s, and the funeral procession of Dr. Martin Luther King Jr. in 1968.