If jail vigilantism is permissible then we might as well forego the trial and just get a lynch mob.
Everyone has seen at least one movie, tv show, etc. where some newly convicted prisoner is told, "meet your new cellmate/husband". Guards knowlingly allow this abuse to occur. Where is the tv report about it? Where are the protests in the streets?
I've had a former guard here on FR complain to me when I said that some guards do use such action to control prisoners and to break their spirits (the guards don't rape, they let a prisoner do it). I responded with a number of articles that I quickly googled. I didn't hear a response and I won't bother to do it again on this thread. Sometimes the guards are brought up on charges, quite often authorities know it happens.
Even GG Liddy has discussed such abuses. When he was in prison, there was a man who was about a week from his release date. He got his throat slit while he slept. He was cut from ear to ear. I think it got ruled a suicide. Mr. Liddy said that there was little regard for an investigation.
And that is just America. If Rall really wants to vent he can do an expose on Mexican prisons. If he "really really" wants to vent he could have done exposes on the abuse of prisoners while Saddam was in power. CNN knew what was happening. Ted could have talked to some Baghdad bureau employee and promised annonymity.