Start with this argument:
Everything that exists is God or is created and sustained by God.
God does not create and sustain anything essentially evil.
The KKK is essentially evil.
The KKK is not God.
So, the KKK does not exist.
Now we have a choice-point. We could say:
If the KKK does not exist, no organization exists.
So, no organization exists.
After all, it may seem reasonable to think that the ontology of social groups should not depend on whether the groups are good, neutral or bad.
But I think it’s not unreasonable to deny (6), and to say that the being of a social group is defined by its teleology, and there is no teleology without a good telos. A similar move would allow for a way out of the previous argument.