Brainwashing

a method for systematically changing attitudes or altering beliefs, originated in totalitarian countries, especially through the use of torture, drugs, or psychological-stress techniques.
any method of controlled systematic indoctrination, especially one based on repetition or confusion:
brainwashing by TV commercials.
an instance of subjecting or being subjected to such techniques:
efforts to halt the brainwashing of captive audiences.
to cause (someone) to undergo brainwashing.
the process of brainwashing.
a subjection to brainwashing.
Contemporary Examples

‘I Considered Suicide,’ Alleged Sex Abuse Victim of Bryan Singer Tells The Daily Beast Tim Teeman April 17, 2014
Buddhist Retreat’s Death Saga Lizzie Crocker July 9, 2012
DC Comics’ New Gay Green Lantern & Marvel’s First Same-Sex Marriage Melissa Leon May 31, 2012

Historical Examples

This Crowded Earth Robert Bloch
The Blue Tower Evelyn E. Smith
After the Rain Sam Vaknin
The Colors of Space Marion Zimmer Bradley
The Colors of Space Marion Zimmer Bradley

verb
(transitive) to effect a radical change in the ideas and beliefs of (a person), esp by methods based on isolation, sleeplessness, hunger, extreme discomfort, pain, and the alternation of kindness and cruelty
n.
v.

To cause profound attitudinal changes, usually in a prisoner, by psychological conditioning, supplemented by drugs and physical abuse
To change or influence someone’s opinions or attitude by methods less stringent than those used on prisoners: They were brainwashed into joining that crazy cult