Violence engulfed the Riders in Alabama, and the federal government intervened. Finally the governors of Alabama and Mississippi agreed to protect the riders, in exchange for being allowed to arrest them. The Governor of Mississippi, Ross Barnett, did not permit violence against the protesters, but arrested the riders when they reached Jackson, Mississippi. By the end of June, 163 Freedom Riders had been convicted in Jackson and many were jailed in Parchman. On June 15, 1961 the state government sent the first set of Freedom Riders from Hinds County Prison to Parchman; to make the protesters as uncomfortable as possible, they were put to work on chain gangs. The first group sent to the farm were 45 male Freedom Riders, 29 blacks and 16 whites. A call went out across the country to keep the Freedom Rides going and "fill the jails" of Mississippi. At one time, 300 Freedom Riders were imprisoned at Parchman Farm.