But, very quickly, the "ideals" of communism (such as they were) were tossed aside in favor of laws meant to control every aspect of private life.
We're kind of getting sidetracked here, but I can't really see a reasonable argument that communist systems encouraged sexual liberation.
That’s because “sexual liberation” is a myth propagated to gain social control; once that is secure sex becomes, for the subject class, a tightly controlled commodity, while for the Inner Party, it is doled out quietly as one of the perks of the nomenklatura.
While the Civil War was uncertain, the Bolsheviks were indeed the party of “sexual liberation.” Once Stalin had eliminated all opposition, the inevitable reaction ensued, with the remnants of the Russian family scattered across a smouldering, shellhole-pocked moral landscape.