The only way to be a liberal now is to wallow in absolute ignorance.
They grasp at virtue signalling like a drowning man clutching at straw, they regurgitate the propaganda like birdies crying for mama's worm, but above all else, they ignore the scandals, lies, slander and all of the utter failings of their demagogues.
If they suddenly gained hindsight they'd have to come to terms with the fact that they were just useful idiots this whole time, while they thought that they were paragons of virtue.