The 1870 passage of the 17th Amendment to the Constitution, that no man could be denied the right to vote, was a big step forward in the civil rights movement. However, nearly 100 years later, most African Americans in the South still could not vote. In March 1965, a march from Selma, Alabama, to the state Capitol in Montgomery was planned to demand voting rights. But the marches only made it six blocks before they were stopped and brutally attacked by state troopers. March 7 became known as Bloody Sunday. The beatings outraged Americans who rallied to support the civil rights movement.