What's interesting is that Marxists and run-of-the-mill, ultra-right-wing accelerationists have the same ideas. Marxism promotes immigration because it is known to destabilize societies. In large amounts, immigration leads to low trust, diffusion of responsibility, it increases public spending, there's more crime, and it creates ethnic enclaves which refuse to integrate and often recreate their homeland in the host nation. That's why the US handled immigration in small amounts. The 1960's immigration change was intentionally done to hurt the US.
The world is dealing with a lot of Cold War Marxists who now operate in the dark, without direction from a major nation like the Soviet Union. They're indoctrinated enough to try and carry out the mission of Marxism, but they're too self-serving to go to communist countries like Cuba or China. They would have to actually work, and they would have to navigate truly lethal internal political machines which would never accept them as Westerners.
So, they get sucked into the nihilistic Marxism of Derrida, Foucault (whose entire philosophy was him justifying pedophilia), and Althusser. I get especially tickled when feminists champion Althusser since the dude murdered his fucking wife and got away with it.