I have criticism for social policy in the USSR, but let's not forget that in 1917 the country was composed of 85% peasants who worked the land almost enslaved to the landowners for miserable wages, and up to 1905 the majority of peasants praised the tsar's godgiven power to rule over them.

Let's also not forget what we compare it with. "Liberal paradises" such as France were murdering more than a million Algerians in the Algerian war of independence in the 1960s.