My bleeding heart Liberal Boomer-aged mom got the Surprised Pikachu experience when she spent so much of my childhood arming me with all the "challenge established authority, fight against injustice, stand up for what you believe in" routine as I grew up.

I think most of them are just so genuinely retarded they don't think you're capable of disagreeing, and when you end up doing so, it must have been evil outside influence, not you recognizing their belief system as false, flawed, and replaceable.