 It was a way for citizens of Marion and Selma to direct their anger over Jackson's death and work for a positive outcome.It also was called to publicize the effort to gain voters' registration reform.Held a few days later on March 7, 1965, the march became known as "Bloody Sunday" because of the violent response of state troopers and the county sheriff's posse, who attacked and beat the protesters after they walked over the Edmund Pettus Bridge, leaving the city of Selma and entering the county.