There are two very disturbing rape scenes. The first one is brief, the second one goes on for several minutes.
There is a rape scene in a car, we see the woman's breasts and a view of her perineum/vulva as she is lifted up by the rapist is clear though darkened. This scene is very disturbing.
A man is shot in the eye. Subsequently, the car with the dead man is raided with bullets by a couple of guys in another car. Later, a man who escaped is shot and killed. Very graphic and disturbing for young viewers.
A boy of 11 or 12 gets shot in a gang dispute.
Not as violent as Scorsese's mafia movies, however rape scene is disturbing.
The violence is not as common as in other gangster films, but most of the time it's very realistic and graphic.
A man is shot in the leg. Not very graphic.
A man is punched a few times onscreen, his face is completely dripped in blood (shown for a bit). One of the attackers is later shot in the head, we see a bloody bullet wound with blood dripping down shortly. Only really bloody bit in a 4 hour movie
Two teens are beaten by a bunch of gangsters, not bloody but very prolonged and brutal, including heavy blows by brass-knuckles and kicks. One of them gets a chain attached to a pull-cart snared around his neck.
A woman is shot twice in chest, a bloody bullet wound is briefly visible before she dies.
During a robbery, a man rapes a woman by throwing her down against a table face down. She moans loudly during the rape; thrusting is seen. No explicit nudity. It is implied she is a masochist and enjoys such treatment.
A character is shot through the eye. Very sudden and bloody.
Various other scenes of strong violence. However never much blood is shown.