Who trashes Coles room when he is in detention center and bloodies his knuckles?

In the story, it's revealed that Cole's room is trashed by the other boys at the detention center. They act out of anger and resentment towards him, leading to a violent confrontation where Cole ends up bloodying his knuckles. This incident underscores the intense and hostile environment of the detention center, as well as Cole's struggles with his own emotions and the consequences of his actions.