Jason Rice is the stepson of Meredith Rice, who was both a school principal and an uncontrollable pedophile due to her inflictions from a brain tumor. When Meredith was caught sexually assaulting Shane Madden Jason originally blamed Shane and even punched him.
When Meredith was arrested, Jason and his father disowned her, while she registered as an offender, got psychological treatment, and was dealt restraining orders. However, he continued to be blame Shane for destroying his family with Shane later telling Detective Elliot Stabler that Jason had punched him in the cafeteria and threatened to beat him up and kill him for Shane breaking up his family. Stabler promised to talk to Jason for Shane about it. (SVU: "Head")