During the Korean War a bunch of US airmen got shot down and captured and then confessed to war crimes including using biological weapons on the Koreans.

There was also lots of Korean propaganda targeted at black US soldiers correctly pointing out the entire war was a fight for Korean national sovereignty and that they’re being used as pawns of capital and their real fight for freedom was at home which resulted in defections to the North Korean side.

The US made up the story of communist mind control to discredit the POWs confessions, explain how a US soldier could defect, and justify MK ultra experiments