One character has a habit of spitting into empty cans and on the concrete. We often see the spittle.
Upon entering the mafia lair, a young character is manhandled and has a gun pointed at him.
One of the main heroes is shown with a bloody nose, explaining that he was mugged. Later, he exacts revenge by breaking into their dorm and throwing their computer monitor on the ground.
A character is chased throughout campus, pushing and shoving people out of his way. This chase ends when two of the pursuers believe they've cornered the character in a port-a-potty and violently open the door with their fists raised. The character turns out to have been hiding and attacks the third; tackling him to the ground, punching, kicking and finally spitting on him.
A character is threatened by a mafia member, causing his nose to start bleeding. We only see a small streak of blood on the side of his hand as he wipes it away.
While high, a character has a bossy attitude and violently grabs things away from at least two people. He also pushes and shoves people who are in his way.
An obviously intoxicated character gets into a fist fight with another. A few punches are thrown, with the attacker being thrown against objects and finally held down. Although he struggles to get out of the hold, with punching, pushing and kicking, ultimately he loses.
A character states his intentions to use a gun in order to take something.
A fight breaks out between two characters as one violently resists being dragged into a car (in order to help him, not kidnapping). Punches are thrown and the characters are shown later to have bruising, including a black eye.
A boxing match is shown on the television.