March on Selma: 50 Years Later (66 images)

Spyra Gordon, one of the original marchers, wipes his eyes after ceremoniously crossing the historic Edmund Pettus Bridge with thousands of others to remember the violent clash between civil rights activists and police during the March on Selma 50 years ago in Selma, Alabama, March 8, 2015. Photo by David Tulis/UPI

A large crowd listens to President Barack Obama during a visit to the historic Edmund Pettus Bridge in Selma, Alabama, March 7, 2015. Photo by David Tulis/UPI

President Barack Obama and the First Lady hold hands with Rep. John Lewis, D-Ga., (C) who was injured in the violence 50 years ago during the March on Selma, and President George W. Bush during a prayer at the historic Edmund Pettus Bridge in Selma, Alabama, March 7, 2015. Photo by David Tulis/UPI

Barbara Collins of Detroit, Michigan, celebrates on the Edmund Pettus Bridge during events remembering the violent clash between civil rights activists and police in the March on Selma 50 years ago in Selma, Alabama, March 8, 2015. Photo by David Tulis/UPI