This is one of those true, declassified government things that always sounds made up but one of the things Henry Kissinger did with his career was use the CIA to help turn small, prosperous socialist nations into fascist dictatorships just to keep those nations powerless and possibly to keep socialist systems *looking* doomed and futile to the American public, like maybe just to scare Americans out of demanding better infrastructure or universal income. Yes it sounds like an insane conspiracy theory a maniac would invent. It also happened multiple times and several generations of people around the world are still living in misery because of it.
Remember folks, the two types of conspiracy theory are "Things the CIA or FBI has admitted to doing" and "Antisemitism"