It's both anti-communism and political illiteracy. I would add that people are generally averse to believe their neighbors and leaders are less evil than foreigners, especially because both cheaper consumer goods and easy credit provide the impression of capitalist freedom and liberal democracy being better alternatives than socialist equality and a socialist state.

"might makes right" as it were. The grievances against capitalism by r/196 and other western Berniecrats are because the superprofits and welfare aren't being distributed as they once were to our antecedent generations. Using violence or political activism outside of voting or light protesting is out of the question because their standard of living is still bearable and preferable than to fight and die for, what liberals-masquerading-as-socialists effectively want, a welfare state.