Narcissists can be incredibly, painfully rude, mean and downright abusive. But why is it so easy for them? What is it about their cluster B personalities, or their disorders, that allow them to treat people so horribly without even a second thought? In addition to the typical narcissistic lack of empathy, there's the Freudian theory of Object Constancy. In this video, I'll explain what that theory is, how it relates to narcissists and why it causes them to be so cruel.