I believe that in fact there is less torture now than there has been in the past, precisely because of the explosion in digital cameras that allowed us the unexpected glimpses into Abu Ghraib and others. The truth is you can't get away with anything these days.
A friend of my dad's served during Vietnam as a translator. The vast majority of his job was translating what prisoners were saying as they were being interrogated. According to him, he never saw a single prisoner leave the room alive, period.
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