Gandalf explains mercy to Frodo
I don't necessarily believe the following clichés, but people in Hollywood have said "Love hurts" and also "Hate makes you strong".
It stands to reason that combining these two ingredients outside of the laboratory is quite dangerous.
Yet, thanks to "black gulags" and "detention centers outside US jurisdiction" (neat trick isn't it? A nation running gulags offshore to avoid its own laws? Could reality be more insane?), our world is full to the brim with enraged and vindictive masterminds of our own making, nurtured in the pits of Stockholm syndrome and weaned on torture.

Gollum tortured on a rack in Mordor
Because of the clarity we obtain, how clearly the average citizen can see the actual "right and wrong" at play in this debate, it is relatively easy to say, those places don't work the way CIA says they do, and the men tortured there will always hate our country. Because of what was done to them, they bear a familiarity with American habits -- they KNOW the enemy through and through, what motivates him, and what does not.
We had better hope and pray right now, that the agents in charge of that mess have a plan B, in case the monsters they've created someday overpower them. Never ever underestimate the focus of a prisoner or his will to escape and revenge.
If you could kill the human spirit, we'd know about it. I'm wondering why our "leaders" are even debating something like this, keeping places like that open.

Gollum hunting the Ringbearer
Trump's cabinet better have something apologetic to say about the Tortured Arabs in our collective pantry.