The one fly in the ointment on this premise that glares at me is that it largely subscribes to mistake theory rather than conflict theory in terms of its mechanics. Humans have evolved to primarily find social affinities and status first, the truth second, as a survival skill. The truth has never had primary domain over society except for the few edge cases where parts of society bestowed social status on truth, which is more scientific research and the like.
All of which would suggest that separating Americans from the truth didn't even need the KGB.