The History
The left today makes the ultimate error in judgment. They embrace relativism and demand political correctness. If all is relative, you can't say I know how you should speak. There is no correct type of thinking according to your relativistic framework.
This contradiction makes way for 1000 more. The left's goal is not to build something, to clarify something or to improve the system. The goal is the same as in the past, destruction of the current system. This is all they have, and it's the central guiding principle. Destroy.
In the past, in communist countries, the left destroyed the economy and killed almost all the successful people at that time. They lied about wanting to make everyone equal, happy and rich. The left wanted one thing, kill the successful people and steal their wealth. Destroy the system that made it possible for people to get wealth (capitalism) and replace it with a dictatorship in their image, total social control.
The Question
It's unclear to me how destruction and total rigid control go hand in hand. I would expect that people with an urge to destroy would reject a totalitarian system of government. Maybe they don't want to destroy all systems; they are targeting something more specific like voluntary interactions, freedom, decentralized uncontrollable systems. Maybe they need a system that they can force others to give them money. They probably know that competing with these high ambition people is not for them, they can never win and get high on the latter of success. They need to invent something else.
The Present
Political correctness or the "feels" give them the upper hand. A system that they can win. Not a hardworking value producing system like the free market but a victimhood status. They get to make what is defined as "victim" and so they always win.
Once you establish the notion of victims in the public mind, you can start to force people to do things for you. You support government programs that tax more and more that cripple the successful and hard working more and more. You wage war on them, but they are not the victims you are. You get the moral high ground; you are not the thief, you are the beggar with a hidden knife.
The final step is destroying reason and evidence. You will get people accurately dismantling your fake victimhood, and for that, you have to prepare. A lot of rage, slander, trying to get them fired, you must try everything to deter them. If that doesn't work you have to use the government, companies to censor them. Take away the platform. If that doesn't work, threaten to burn down the place, protest, violently, scare everyone into submission. Relentless Jihad.
The Repetition
It seems that society is always under attack from "leftists" this ideology of destruction, enslavement, and force. It's like what doesn't kill you makes you stronger. Similar to nature and evolution. Society needs this attack to evolve towards more sound and stable principles. Societies that can't do that fall and break and starve. The ones that stand the test flourish and expand.