Prisoners in Guantanamo can get out, if they have strong enough al Qa'ida ties, by turning informer. On the other hand, if you were captured for being in the wrong place at the wrong time, you may never get out.

I have no objection to infiltrating al Qa'ida. Unlike the dissident movements that the thugs usually infiltrate, al Qa'ida supports neither human rights nor democracy. What does bother me is that this might be part of the motive for the oppressive practice of imprisoning people indefinitely without a trial.