If I remember right, Socrates said that nobody willingly does evil. Whatever they do, even if it is evil, they believe something good, at least for them, will come from it. He said that it is impossible to knowingly do something that you believe to be wrong, or something like that.

So really, anyone who does anything thinks they are justified, in some way, otherwise they wouldn't do what they are doing.

Either way, people are fucked up.