Communists were evolutionist but NOT “Darwinists”. They did not believe in the theory of natural selection because it smacked too much of CAPITALISM with unequal outcomes and competition being the engine of change. The Communists liked Lamarkian evolution, and even denied that genes and chromosomes existed. They declared genetics a “bourgeois” science and sent its proponents to Siberia.
I guess you know about as much about Science as you do about History.
Not exactly true. The Communists under Marx and then Lenin began as Darwinists, deviated into Lamarckism under Stalin/Lysenko (while Darwinism was on the wane and Lamarck was quite in vogue, I might add) , and then returned Darwin to his rightful place of Communist honor after Stalin died.