SELMA, Ala. -- Saturday marked the 50th anniversary of "Bloody Sunday," when hundreds of civil rights marchers were attacked on the Edmund Pettus bridge in Selma, Alabama.
President Barack Obama and nearly 100 members of Congress joined people from across country as they gathered in Selma to honor their sacrifice.
About 500 people participated in the 1965 march from Selma to Montgomery. They were met at the bridge by about 150 Alabama state troopers and a group of white men who'd been deputized by police.
The troopers fired tear gas and beat non-violent protesters with whips, clubs and batons.
Television reports showing the violence shocked the country and helped build support for passage of the voting rights act of 1965.