In June 1966, James Meredith began a solitary protest march for voting rights and an end to segregation. Four years earlier, Meredith became the first African American to attend the University of Mississippi. That year, President John F. Kennedy called in 320 U.S. marshals and authorized the use of regular Army troops so that Meredith could register at the renowned Oxford campus. Mississippi Gov. Ross Barnett stood literally in the doorway of the registration building to prevent the historic exercise in school choice.