Some modern “Liberals” want to exterminate the other 90% of the human race.
There are two layers of liberalism.
Those you describe are the outright communists at the top who derive their power from exploiting the hangups of the “sheeperals” at the bottom.
The communists at the top sincerely hold it as a given that the world would be better off with a much lower population, if that remaining population were all communist and not “infected” with bourgeois tendencies, you know, like expecting compensation for effort.
Now the sheeperals are only driven by two things.
One is to feel good about themselves as “good people”. This is the pernicious lie of history and comes from the rejection of the truths revealed through Christianity.
The second motivating factor is to have the consequences of their behaviors paid for by someone else. Ironic, no? That’s exactly what Christ did.