It’s very hard to prove a negative, especially to people who want to believe, thanks to over a century of anticommunist propaganda. The burden of proof ought to be on those making claims of secret foreign police stations on their soil, an extraordinary claim. All those articles are trash and have no real evidence. And they don’t need any, because almost no Westerners demand any, because the narrative aligns with their preconception of communist states as cartoonishly evil.

Masses, Elites, and Rebels: The Theory of “Brainwashing”