If that is something that needs to be taken into account, we should all be locked up, just in case we do something wrong in the future. If a prisoner has done something wrong charge and try him, otherwise he is innocent and should be released. If we dismantle that principle, we are in far greater danger from our own than from any external force.

How can you judge? "On the record", even!! Isn't one of the major problems that it's unknown whether these people are even guilty of anything or not? No trial, remember? So how can you suddenly know and decide "for the record" what any one of these prisoners will do if they get out?

Is the man in the article lying then? He says he's innocent. Of course he would. But who are you to decide one or the other?