Bad by association and the hivemind are my faves, I particular enjoy:

• “Evolutionary psychology is inherently bad, useless, and only stupid people could have such thoughts. Science as I understand it is the only valid way of thinking.”

• “Dosing a population with fluoride via tap water is inherently a 100% good thing and to question it implies ones utter stupidity, drugging a population this way with any other substance would be unthinkable though.”

• “Guns for civilians have no use other than school shootings, no good person should want a gun they must be banned.”

• “Boomers caused all of our problems, despite the fact that I also willingly participate in all the harmful systems that caused these problems.”