Guards at New Mexico State Penitentiary had a “snitch game”. They would label inmates as snitches, let them be abused, and wait for them to turn into informants to escape their tormentors.
Two inmates sued the state of Alabama, claiming the cramped space in their cell was a cruel and unusual punishment. The state argued that students at Auburn University actually paid to live in even smaller living space in the Magnolia Dorm.
The longest prison term ever sentenced was 2,200 years. He appealed, was re-convicted, re-sentenced, and given an additional 9,000 years.
There’s a town in Brazil that powers its streetlights by having convicts pedal bicycles attached to generators.
The country of San Marino has only one prisoner.
An Indiana State Prison lets murderers adopt cats in their cells.
Prisoners in 48/50 US states are denied the right to vote (voting is not a fundamental right in the USA).
Jacques Mesrine, French criminal, once broke into a prison he escaped from days earlier, to start a mass breakout because he was unhappy at his treatment in said prison.