While Ravi must take responsibility for his actions, we are all accountable, not just him. Punishing one dumb kid for failing to rein in his dark side primarily serves to make us feel better when it shouldn't, to shift the burden of responsibility to anyone but ourselves.
Maybe it helps to make sense of Clementi's death by creating a narrative, a cause and effect. Maybe it helps to make sense of Clementi's death by fabricating a villian. But incarcerating and/or deporting Ravi only compounds this tragedy.