The deliberate manipulation of beliefs, emotions, and perceptions through selective presentation of information — a practice as old as organized power and a concept whose modern form was shaped by the First World War, theorized by Freud's nephew Edward Bernays, industrialized by totalitarian states, and then so thoroughly absorbed into advertising, public relations, and electoral politics that its boundaries with legitimate persuasion became genuinely contested.
The word 'propaganda' was not always an insult. It comes from the Latin propagare — to spread — and was used by the Catholic Church to describe the Congregation for the Propagation of the Faith, founded in 1622 to spread Christianity. For three centuries, propaganda meant organized persuasion. The word acquired its current negative charge in the 20th century, specifically from the experience of World War I — when all sides used mass communication to manufacture consent for an unprecedented war, and then from the totalitarian states that industrialized the technique. But the negative charge has a problem: it implies that propaganda is something others do. Recognizing it when it is done by your own side, in your own interest, is harder than the concept suggests.