Four black victims were shackled to one of the tables in a pod in a Southern Ohio Correctional Facility in Lucasville.
While they were playing cards, the guards let in 38 year old Greg Reinke who had a shank hidden in his trousers.
He attacked the inmates in an obvious setup by the guards and an investigation this month prompted the prison to re-work their security measures.
Nobody was punished and the guards are able to keep their jobs. Check it out: