Agreed to the reviewer's contention that ragging brings out brutality, baser insticts yada yada..
But in many instances it has also led to friendship between the ragged and the ragger. I have seen that after the ragging, the senior/junior divide disappears in many cases and they start sharing a friendship/camaraderie. If there are exceptions, then it definitely tells us that the ragger in those cases are indeed saddists.
Saying this much I am not trying to defend saddist ragging. It has to be struct down with an iron hand.