May 21, 2012: Hundreds of prisoners took control of a unit at a private prison owned by Corrections Corporation of America (now Core Civic) and attempted to negotiate a meeting with the warden to voice their concerns. After guards deploy tear gas canisters, prisoners threw the canisters back towards the firing line along with stones, soda cans, and kitchen trays. Some prisoners stacked food trays and reached the roof where the guards were stationed, assaulting prison staff and again demanding a meeting with the warden.