Nineteen Eighty-Four is a dystopian novel and cautionary tale by English writer George Orwell. It was published on 8 June 1949 by Secker & Warburg as Orwell's ninth and final book completed in his lifetime. Thematically, it centres on the consequences of totalitarianism, mass surveillance, and repressive regimentation of people and behaviours within society. Orwell, a democratic socialist, modelled the authoritarian state in the novel on the Soviet Union in the era of Stalinism, and Nazi Germany. More broadly, the novel examines the role of truth and facts within societies and the ways in which they can be manipulated.

Brainwashing, also known as mind control, menticide, coercive persuasion, thought control, thought reform, and forced re-education, is the concept that the human mind can be altered or controlled by certain psychological techniques. 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, as well as to change their attitudes, values, and beliefs.