Not really. If that were the case, then evildoers would at least recognize themselves as such, but even such writers as Dale Carnegie have noted that the villians in history invariably fail to see themselves as villians. In their own minds, they're always either doing good works, fulfilling some grand scheme, or merely providing a service which othere need (as in the case of Al Capone).
That's a good response. However, I think such meglomaniacs are rare. Probably the Clintons are a good example of the type, being totally without conscience, but they haven't yet had the opportunity to commit crimes on a vast scale like the Stalins of the world. Most of us would experience guilt, and wouldn't even contemplate the deeds of history's monsters. I don't think the exceptionally malignant examples of mankind prove anything about the rest of us.