Florencio Varela, Buenos Aires in the context of "Brainwashing"

Brainwashing is the systematic effort to get someone to adopt a particular deception, loyalty, instruction, or doctrine without their will or awareness. Brainwashing is also a colloquial term that refers in general to psychological techniques that manipulate action or thought against a person's will, desire, or knowledge. It attempts to damage individual or group attitudes, frames of reference, beliefs, values or loyalties by demonstrating that current thinking patterns and attitudes are wrong and need change. Brainwashing is said to reduce its subject's ability to think critically or independently, to allow the introduction of new, unwanted thoughts and ideas into their minds.

The term "brainwashing" was first used in English by Edward Hunter in 1950 to describe how the Chinese government appeared to make people cooperate with them during the Korean War. Research into the concept also looked at Nazi Germany and present-day North Korea, at some criminal cases in the United States, and at the actions of human traffickers. Scientific and legal debate followed, as well as media attention, about the possibility of brainwashing being a factor when lysergic acid diethylamide (LSD) was used, or in the induction of people into groups which are considered to be cults.