My opinion only.
In a conversation with one of my brothers just yesterday we touched on this very topic. In the course of the discussion I used the old saw that begins, “You can lead a horse...” as a prelude to a long held belief - that post-modern leftists don’t (can’t?) argue using reason - they rely on emotion.
When you couple that with another phenomena peculiar to the left - the complete and utter lack of shame - you have people that you can neither reason with nor appeal to their sense of honor.
That leaves me with but one alternative - fear of consequence. “Get away from me or I’ll kill you” Perhaps an oversimplification but the principles at play are accurate.
The direct answer to you question is “merely shut them up”. They are welcome to think (feeeeeeeeel) any cockeyed notion they want - as long as they keep it to themselves. Make them contemplative of the fact that if they choose to act out there will be painful consequences for them.
IMHO
I like to think of that as the ultimate application of evolutionary psychology! Just Kidding, Mods.
Mark my words, if ever we came to the brink of Revolutioanry War II, it would not take much real fighting, before most Liberals fell into Stockholm Syndrome, and abandoned the fight. I would not be surprised to see them become ardent Conservatives overnight.
TC, brother.
“as a prelude to a long held belief - that post-modern leftists don’t (can’t?) argue using reason - they rely on emotion.”
Fear is an emotion. The argument supported in this thread is an appeal to emotion, not logic.