"The capture of American GIs in the Korean War heightened the alarm. Stories coming out of Korea suggested that the Chinese and Korean communists had developed techniques of indoctrination which nobody could resist. US soldiers and airmen had allegedly been turned into fervent communists. This process became known as brainwashing. Panic gripped the popular press. Perhaps such POWs, when liberated, might return home as clandestine subversives. It was years before brainwashing was shown to be a fantasy. When captives, brutalised by torture and malnutrition, professed adherence to Marxism-Leninism they were usually calculating that a pretence of ideological conversion would stop their torment."