Lots of grave spitting, huh?
Calling people that disagree with you "evil" is a good way to bury your head in the sand about the complexities of life and live in a simple world where you see yourself as omniscient (when truly you are just another slob with an opinion); you don't then have to legitimately try to put yourself in their shoes and understand why they feel the way they do. Creating this fairy tale world where everyone who disagrees with you is "the bad guy" seems to be all the rage these days, so much arrogance about beliefs and opinions.
I didn't agree with Cheney's ideas and policies for the most part, but like you, me, and nearly everyone else- he believed his own life narratives and opinions were true and good. Aside from psychopaths (who can hurt others without shame or remorse), that's pretty much true of everyone.