[rlmorel]

I think I understand your point, and we both share the observation that you wrote: "...There are, at present, at least two completely separate and incompatible countries called America. They can not co-exist. Separatism is a dead end because the left can not allow the existence of anything that refutes the left..."

In my opinion, it didn't just "happen". It has been a deliberate effort on your their part to create this, because as you said, "the left can not allow the existence of anything that refutes the left."

That would be called "The Truth". And when the truth cannot be allowed to exist, it can only be successfully suppressed by force and violence. And even then.

[Grimmy]

“In my study of communist societies, I came to the conclusion that the purpose of communist propaganda was not to persuade or convince, not to inform, but to humiliate; and therefore, the less it corresponded to reality the better. When people are forced to remain silent when they are being told the most obvious lies, or even worse when they are forced to repeat the lies themselves, they lose once and for all their sense of probity. To assent to obvious lies is...in some small way to become evil oneself. One's standing to resist anything is thus eroded, and even destroyed. A society of emasculated liars is easy to control. I think if you examine political correctness, it has the same effect and is intended to.” ― Theodore Dalrymple