On March 7, 1965 an estimated 525 to 600 Civil Rights Marchers headed east on US Highway 80, the march was led by John L. Lewis of SNCC and the Reverend Hosea Williams SCLC followed by Bob Mank of SNCC and Albert Turner of SCLC. The protest went according to plan until the marchers crossed the Edmund Pettus Bridge and out of Selma, where they found a wall of State Troopers and county posse waiting for them on the other side. County Sheriff Jim Clark had issued an order for all white males in Dallas County over the age of 21 to report to the courthouse that morning to be deputized , Commanding Officer John Cloud told the demostrators to disband at once and to go home. Reverend Hosea Williams tried to speak to the officer but Cloud curtly informed him that there was nothing to discus Seconds later, the troopers started shoving the demostrators many were knocked to the ground and beaten with nightsticks another detachment of troops fired tear gas and mounted troopers charged the crowd on horseback. Televised images of the brutal attack presented Americans and International audiences with horrifying images of marchers left bloodied and severely injured roused support for the Selma Voting rights campaign. Amelia Boynton who had helped organize the march as well as marching in it was beaten unconscious a photograph of her lying on the road of the Edmund Pettus Bridge appeared on the front page of newspapers and news magazines arond the world , overall seventeen marchers were hospitalized and the day was nicknamed " Bloody Sunday ."