"The CIA did not employ adequately trained and vetted personnel. The CIA deployed individuals without relevant training or experience. CIA also deployed officers who had documented personal and professional problems of a serious nature—including histories of violence and abusive treatment of others—that should have called into question their employment, let alone their suitability to participate in the sensitive CIA program."
Imagine that discussion, the one that the Senate report implies SHOULD have taken place: "OK, we need a torturer. But make sure it isn't someone who is violent or abusive!"
As if it would purify the act of abuse if only the torturer were not a torturer in his heart.
"We need a torturer - someone who takes no pleasure in torture, and to whom torture is utterly foreign."
This is the perfect expression of the Inquisition mindset, and the Nazi mindset. We must do horrible things, but convince ourselves that we are not the kind of people who do horrible things. We must believe that we do horrible things in service of a noble goal, and that these horrible things are purified by the goal that they serve. Those who truly understand the goal will even see that the horror we inflict is not truly horrible at all.
In the end, of course, the guy who tortures ends up being the guy who was always an abusive human being anyway.
It is the fiction that there is a form of a torture program that doesn't rely on abusive, violent people that is the real obscenity.
The committee is complaining about the kinds of individuals who inflicted torture, but such individuals are the only likely, or reasonable, candidates to be torturers. A sick program relies, at the bottom, on the actions of sick human beings.