The men are told to strip when they arrive at the prison but you only see them undress to a vest and underwear.

A man is beaten in a room, and is then seen later on in a van with a bloody face and a black eye it's very graphic

Frequent shots of a beaten up man.

"f*ck" is seen in the English subtitles a bit.

cigarette use

Midway there are intense scenes eg. beating up