they believe in nothing, only self-interest.

The fuck you think "evil" is?

Edit to clarify:

"Evil" like exists in media isn't real, it's propaganda from the people in power to convince you they're the good guys and they overcame "evil" so we're better off with them than without.

It's an excuse to give them too much power. And it's such a good excuse that people in power will manufacture terrible situations to just that "evil" is a natural phenomona on a large scale. And they're never put good effort into any type of peace. They want/need perpetual lie to keep people scared enough they'd turn over all their own wealth and actual security.

That's the most evil shit in the real weird, and there's so much of it we don't need to worry about boogeymen.

That sounds evil to me.