Manipulation, first coined by Edward Hunter, became a thing after the North Korea and South Korean War. The war began with the help of Communist China backing North Korea to fight against South Korea. The United Nations decided to help, and to do so, U.S. army were deployed to support South Korea. When the war finished, and the soldiers went back home, some started to see governance differently, and would talk nicely about communism instead of slander it and talk badly about how they were treated by the Chinese.
The government, in an intervention to know what the cause of this was, decided to invite CIA agent Edward Hunter, to find out if they were treated beyond normal and why they suddenly liked the great leader approach to a presidential approach. Edward came back with one word, "Brainwashing". It was believed that when the soldiers were captured, they were not killed, instead they were indoctrinated to become followers and advocates for communism.
Brainwashing is a psychological attack on the mind to a point of breakdown, where the mind is completely helpless and is willing to take in information. At this point, everything said to the person will stick to it.
Our recent video explains Brainwashing. We hope you find time to watch the video.