Kinda explains why no matter how clearly and concisely the positions and "thoughts" of certain groups of people are shown to be categorically and irretrievably wrong, they will just push on shamelessly from some other angle. I have a theory that these people are devoid of logic because they are opposed to God. "In the beginning, there was The Word (logos)..." The etymological root of our word logic. They deny God (The Word) and, in return, they are denied the use of logic. They don't miss it, though, because they never had it. I'd almost feel sorry for them, except that it's actually sadder for us to have to live with them in our midst. Because they're incredibly stupid, noisy PAINS IN THE ASS.
Correct you are in describing what I can only call 'classic Marxist doctrine'.
As someone who was born and educated in my formative years in a communist country, I can expound on this a bit from the perspective of being in a place where the Marxist doctrine was out in the open.
As a child, you are taught the usual lies about religion and the "bourgeoisie", taught a stunted and often rewritten version of history, and, above it all, is this thread (which neatly ties the old world real communists with their current American fellow-travelers:
An almost religious faith in the inerrancy of their doctrine (but based on what used to be called "scientific socialism" and frankly, lifting a page right out of Charles Darwin) - to wit, that Marxism was the natural and last evolution of human society, and its spread and success was a SCIENTIFIC CERTAINTY.
This is the kind of mindset (whether openly held as in former communist countries) or simply unconsciously absorbed as a life philosophy due to the educational and cultural (hidden) Marxist brainwashing of several generations of American youth) that is the very definition of fanaticism.
If you have a mathematical certainty about your own superiority and your duty as an agent of change to bring it about, then of course you will never sleep, never rest, and foment your revolution tirelessly with every waking breath in your body.
This way of thinking took over the Democrat party in the 1970s and flowered under the first cultural Marxist to hold the office of President of the United States - Bill Clinton (who is married to a REAL Marxist).
Hence all rules and propriety went out the window, and the Democrats agenda essentially became running a constant campaign using the tools of the big lie, smear, slander and ceaseless character assassination.
The foolish 'bourgeoisie" of 'traditional' Republicans found this to be annoying but suffer from a complete lack of ability to see what is the 'infernal mechanism' behind this culture change in our politics, much less the ability to devise an effective counter-strategy or the will to implement it.
Hence the Marxists always appear to be on the offensive in every arena (Academe, media, culture, politics) while traditionalists wind up fighting a rear guard action at best, and trying to appease the insatiable monster at worst.
Either way - the traditionalists lose.
Communism, of course, was completely unnatural and practicably untennable due to being an ideology running completely counter to human nature. It collapsed of its own weight, helped in no small measure by those in the West who saw the danger for what it was, held the line, and fought a clandestine (and sometimes overt) war to contain communism until it disintegrated.
Lest you think that I offer this historical perspective as a branch of hope, however, I must now introduce some bitter sobriety; yes, Leninist communism collapsed all right - but only after utterly and completely destroying the economy, culture, and 4 generations of the nations that fell under its grip.
Human nature and the laws of nature (and of nature's God) likewise dictate that the American experiment with cultural Marxism is doomed to wind up on the ash heap of history.
Unfortunately, the history of the 100-year war against communism suggests that this ultimate defeat of the monster will come at a frightful price - the preceding disintegration of American and Western culture and it way of life.
And already, in the wings, lurk other systems (Islamicism, coming out of a dark mideaval past, and a kind of leftist fascism that is increasingly emanating out of China), that are skirting our borders, like wolves looking for an opportunity to supplant and devour Lady Liberty and replace her with another totalitarian (though not quite so thumb-suckingly utopian) ideology.