Hi, Percy.
Condemning evil is part of Christianity. And, since the extreme dualism of Christianity allows only two possibilites (good or evil), whenever a disagreement comes up, it only makes sense to assign one side as "good," and the other side as "evil," simply because "good" does not disagree with "good."
Well, who's going to believe that their own side is the "evil" one?
From there, black-and-white, absolute dualistic morality forbids any conclusion except, "you are of the Devil."
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I'm sure you know this already, but writing it made me feel better.
-Bluejay/Mantis/Thylacosmilus
Darwin loves you.