[caption id="attachment_1780" align="aligncenter" width="2048"] Two Minute Warning (1965) by Spider Martin. National Archives (CC BY-NC 2.0)[/caption] Sunday was the 56th anniversary of the first Selma to Montgomery civil rights march, which is indelibly associated with the late Georgia Representative John Lewis. The date is better known as "Bloody Sunday" for the violent attack on marchers on the Edmund Pettus Bridge by Alabama State Troopers and a white mob recruited by Dallas County Sheriff Jim Clark. Lewis, who was then an organizer for the Student Nonviolent Coordinating Committee (SNCC), was beaten so badly that he suffered a skull fracture. Scenes from...