As a dark dystopian satire that explores whether or not sociopathic criminals can be reformed by behavior modification and reconditioning, there is not much in the way of positive messages.
Extreme violence throughout the movie. Within the first 15 minutes, a drunken homeless man is beaten up on the street by four young men, and these four young men watch a group of other young men begin to rape a woman before the two gangs engage in a fight with knives, chairs, and fists, and a woman is raped by these same men while her husband is forced to watch. A young man is forced to watch violent images on a movie screen -- first, a man being beaten and bloodied by a group of young men, and next, a woman raped by a group of young men.
Full-frontal female nudity, sexual innuendo, male nudity, explicit sex scenes. Characters are frequently surrounded by sexual images -- paintings of naked women, sculptures of penises, naked women mannequins who produce milk for consumption out of their nipples. A male social worker engages in inappropriate touching with a young man under his jurisdiction; he eventually reaches down and grabs the young man's penis as he sits next to him in his underwear.
"F--king hell," "bastard," "s--t." Characters use their own slang, which is generally made up of Russian words, and they refer to sex as "In-out."
Characters drink a beverage in a bar called "Moloko," which is a mix of milk and an unknown drug that the narrator claims sharpens one's senses and makes him more desirous of committing acts of extreme violence. Early in the film, a homeless man is shown drunk and singing, surrounded by nearly empty booze bottles.