Oh, the left most definitely believe in evil...they believe all people to the right of Lenin are evil.
Not quite that bad, but a great majority of people who call themselves liberals certainly believe all conservatives are evil. Why else would they, conservatives, fail to go along with the liberal/left agenda?
Why do conservatives not condemn capitalism and the evil one percent who have all the money.
Why don't conservatives love people with weird sexual predilections which might eventually include having sex with plant life and animals?
Why do many conservative, white people fail to acknowledge their virulent racism and determination to keep all non-white people down? Conservative white people should just admit to their Klan membership and be done with it.
That's right.....a great many liberals do believe in evil....Evil Conservatives.