As I have noted before, it has become common in certain quarters to assume evil people are sociopaths or psychopaths (I think they're pretty much the same thing), especially those in high places. This is something I object to for a variety of reasons (it seems to me to be a convenient way of "Othering" people one doesn't like and avoiding facing the reality of human fallibility), but one problem is that it reduces complex (albeit wicked) people into caricatures.