Inmates at Attica shouted their demands during a negotiating session with state corrections officials in September 1971.

“The Attica Prison Rebellion, also known as the Attica Prison Massacre, Attica Uprising or Attica Prison Riot, was the bloodiest prison riot in United States history and is one of the best-known and most significant flashpoints of the prisoners’ rights movement. The revolt was based upon prisoners’ demands for better living conditions and political rights. On September 9, 1971, 1,281 out of the approximately 2,200 men incarcerated in the Attica Correctional Facility rioted and took control of the prison, taking 42 staff hostage. During the following four days of negotiations, authorities agreed to 28 of the prisoners’ demands, but would not agree to demands for complete amnesty from criminal prosecution for the prison takeover or for the removal of Attica’s superintendent. By the order of Governor Nelson Rockefeller, state…