The Overton window has formed a bubble. People inside the bubble now refuse to have anything to do with those outside the bubble, refuse to hear, refuse to understand, refuse even to notice, react to them only with ignorant crazy hatred, and if anyone respectable shows signs of listening, he loses respectability and gets cast out of the bubble. No longer will respectable people have anything to do with him. He shall be friendless and alone. Except that so many people have been cast out of the bubble that he probably will not be friendless and alone.
This particular form of the left singularity, like many forms, leads inevitably to civil war. Unlike most forms of the left singularity, it will lead to civil war that the left is likely to lose.
Know your enemy and know yourself, win a hundred battles without jeopardy
Know yourself, but not your enemy, win some, lose some.
know neither yourself nor your enemy, always lose.
The left has weaponized self inflicted ignorance, symbolized by literally and physically turning their backs on their opponents. This weapon is apt to backfire. Not a good idea to show your opponent your back.
The back turning maneuver is a DHV (demonstration of higher value) It subcommnicates “You want our attention, but are beneath us, and are no threat to us”. It will be harder to pull off once Trump imprisons the officials of a few sanctuary cities and fires the Washington press core. (Which despite being a supposedly private enterprise organization works from government offices and receives the usual services and benefits provided by government employees to people in government offices, as do a great many politically critical supposedly private enterprise organizations. The phrase “NGO” has become a joke, with even NGO employees describing their work as government employment.)
A good reply to the physical back turning maneuver is to pour an iced drink over the offender. You have to respond to the “You are no threat” subcommunication by showing you are a threat.