The Power Of Delusion
This is a useful thing to keep in mind when dealing with lefty relations. Your well-intended efforts to break the spell, only serve to make it stronger. It is counter intuitive, but the best thing you can do for a deluded friend or relative is to act disinterested. If you argue with them, they see that as proof they are speaking truth to power. If you agree with them, even on a small point, they see that as confirmation. Indifference throws water on that chemical reaction and robs them of the energy to carry on in the face of reality.
This is why the Left forces everyone to pick a side. For example, you cannot be indifferent to the various crotch fads. You are either enlightened or a homophobe, open minded or a gender-normative bigot. There can be no middle ground, because the delusion that fuels these causes depends upon the conflict. The indifferent are the black swans of the delusional. It’s not simply hive-mindedness. It is a need for the conflict between their beliefs about themselves and the reality of the world in which those beliefs conflict.