President Barack Obama delivered a speech on Saturday from the Edmund Pettus Bridge—named for a grand dragon of the Ku Klux Klan and site of what came to be known as "Bloody Sunday"—addressing race in America. "What happened in Ferguson may not be unique," he said, "but it's no longer endemic. It's no longer sanctioned by law or custom, and before the civil rights movement, it most surely was."

Today marks the 50th anniversary of Bloody Sunday, the first of three marches that would spur the passage of the 1965 Voting Rights Act. Voter suppression among the black community was an unwritten law across the Jim Crow south in the first half of the 20th century, and Selma, a small town in the heart of Alabama, became a pivotal battleground in the fight for civil rights.