Many prisoners are brutally and savagely beaten by guards and the sadistic warden. These beatings are sometimes off-screen and sometimes on-screen, and the men are often seen bloody and injured afterwards.
Some angry behavior and fighting on the prison grounds. These happen many times, as the prison is a very rowdy and bleak place.
The main character is tormented throughout the movie.
Two little kids are shown how to "discipline" prisoners. The warden beats some kids violently with a belt at their feet.
A man is strung up by his ankles on a torture rack and severely beaten with a belt.
An animal screams at night off camera. Shortly afterwords, a dead cat is shown.
Little actual gore (other than the tongue biting scene), but when violent scenes happen, they are very cruel and bloody.