Not everyone who disagrees with you is stupid, evil, or both. Smart people and good people and both smart and good people can be mistaken. Even you might just possibly be a little bit in error. Just possibly. At some point or another. On this topic or that.
Which is not to say you shouldn't argue vigorously for your positions. Please do.
Still, if you want to persuade me, it's probably best not to treat me as if you suppose me to be stupid, evil, or both.
Happy New Year.