There are other resemblances to the older empire. At the heart of Soviet thinking was the blank slate, the idea that life outcomes are determined entirely, or almost entirely, by social forces rather than genes. As Mao said of the peasantry, “a clean sheet of paper has no blotches, and so the newest and most beautiful words can be written on it”.

Likewise, American progressivism today is entirely built on the blank slate, and as in the USSR, where belief in Mendelian genetics led to internal exile, American social scientists offering any sort of genetic explanation for outcomes face ostracism. Privately, lots of people will agree, but they’ll lose their job if they speak out, or their publisher will drop them, or it will only embolden the party’s enemies and harm the noble goals of progressivism.

Communists saw their political beliefs as so all-encompassing that even science was political: if science contradicted the goals of communism, it wasn’t science. In today’s United States the slow death of liberalism has resulted in the blatant politicisation of science, to the extent that as in Russia, scientists teach things which are obviously untrue because it supports the prevailing ideology. Then there is the media, much of which parrots the party line with almost embarrassing, “Comrade Stalin has driven pig iron to record production” levels of conformity. Once again, if you want to hear the truth, go to the BBC (until the young people who run the website take over).