Norman Finkelstein said something the other day, quoting someone else...it was..."hypocrisy is the homage that vice pays to virtue". Meaning, evil people understand what they're doing is wrong, that's why they pretend to be good. Hypocrisy is beyond the point to them. They've sacrificed morality. Although I think Finkelstein was saying it in the context of talking about how Republican pols do so much less of even pretending to be good (though certainly not zero).