Probably marxism. Critical Marxism to be exact. You have to criticize everything until you get to utopia. All the walls have to be broken down until there's no more contradictions. Then mankind realizes they are god and we can perfect ourselves. Or something to that degree. idk its bullshit.
And groups like Trannies are easy to control. They tried to make the middle and lower class people rise up against the upper classic. Like in Russia. But after wwii, the middle class proved to want to revolt. Since the marxists failed with the middle class, they went after the lower class people. Like blacks, the lgbt, other groups outside the margins of normal society.
You have it close but not quite there. As far as I know it... In the 70s, when the Gulag Archipelago came out and the USSR failed and it became very very obvious that Marxism does not work in reality, you suddenly had a bunch of academics that had spent a very long time and a lot of resources being Marxists... and Marxism was now conclusively proven to be shit.
So if you're an academic who is suddenly found to be believing in complete bullshit, what do you do?
Half of them went the Post-Modernism route. Post-Modernism is a different academic discipline, but it was appealing to the Marxists, as it rejects logic and facts in lieu of power dynamics. What is the sun? "Science" says it's a ball of hydrogen plasma. Um'buku the goat farmer says it's the left testicle of the creator god after he sat on it after a 3 night bender. Who is to say Um'buku is wrong? It's HIS truth. Does Marxism work? Logic says no. But our FEELINGS say it does, and don't our FEELINGS count as much as your facts? They will if we prevent you from speaking!
The other half went the Culture Marxism route. Marxism doesn't work on economics. But what if we apply it to some other majority vs minority wedge? Maybe it works there! Race relations, sexuality relations, what have you. Anywhere there's a majority (bad) and minority (good) then inherently the minority must be being oppressed by the evil majority. Nothing else can be considered, minority good, majority bad.
You combine the two, and you get Intersectionality. Woke. Religious, power obsessed Neo-Marxists who see everything as a potential wedge issue to break the west across.
Does Marxism suddenly work? Of course not. But that's logic, and if they have their way, even suggesting that will be a racist transphobe sexist hate crime.