Thanks for mentioning the movie Hero, I haven't watch that one.
I agree with the fact that there is a tendency in bad people to somehow see themselves as a force for good. Perhaps that is the only way for a person to be able to do so many evil things, to delude themselves into thinking they are doing good...
Yes, that is how many justify doing wrongs by convincing themselves it is right. Denial is powerful. Some know it's wrong and do it anyways because they don't care, as long as they get what they want.