The population of the small historic town of Selma, Alabama swells once a year as people from around the nation flock to its downtown, its churches before finally gathering for the crescendo event — walking across the Edmund Pettus Bridge.

Edgar Moore, 74, pointed to where Alabama State Troopers met him and other Bloody Sunday marchers 60 years ago.

People make the pilgrimage annually to walk across the iconic Edmund Pettus Bridge, where on March 7, 1965, law officers attacked civil rights activists in an incident that became known as Bloody Sunday.