Evil is – psychologically speaking – terribly real. It is a fatal mistake to diminish its power and reality even merely metaphysically.
– Carl Jung, Letters Vol. I, Pages 539-541.
Evil is real, psychologically speaking. It’s what happens when we react to our own pain by lashing out instead of meeting it with kindness, patience, and curiosity. That lashing out can be very damaging to ourselves and those around us. And when it’s acted on by political leaders, it can harm a whole society. Trump is an unfortunate current example of this. I assume he is reacting to his own pain in the way he behaves, and those who enthusiastically support him do the same. Adyashanti talks about this in the discussion on Judas in Resurrecting Jesus.
Note: I am not sure why three pages are listed in the Jung reference, and the second part of the quote does seem a bit mangled.