They would indeed stoop so low.

That's what humans need to learn about psychopaths.

They are not human. Oh, they may dwell in human bodies, but they have been taken over.

The human within has been shoved aside and only evil remains. There is nothing, absolutely nothing, that a psychopath would not do.

You have to think as low as you can, then know the psychopath will go lower.

That's why they so often win.

Humans can't fathom such evil They think you are making it up.

So they do nothing to stop the psychopath.