The Two Minutes Hate, from George Orwell's novel Nineteen Eighty-Four, is a daily period in which Party members of the society of Oceania must watch a film depicting the Party's enemies (notably Emmanuel Goldstein and his followers) and express their hatred for them for exactly two minutes.
The protagonist's feelings, the psychological methods and their effects within a social setting are analyzed in detail by Orwell in the following passage:
The horrible thing about the Two Minutes Hate was not that one was obliged to act a part, but that it was impossible to avoid joining in. Within thirty seconds any pretence was always unnecessary. A hideous ecstasy of fear and vindictiveness, a desire to kill, to torture, to smash faces in with a sledge hammer, seemed to flow through the whole group of people like an electric current, turning one even against one's will into a grimacing, screaming lunatic. And yet the rage that one felt was an abstract, undirected emotion which could be switched from one object to another like the flame of a blowlamp.
The film and its accompanying auditory and visual cues (which include a grinding noise that Orwell describes as "of some monstrous machine running without oil") are a form of brainwashing to Party members, attempting to whip them into a frenzy of hatred and loathing for Emmanuel Goldstein and the current enemy superstate. Apparently, it is not uncommon for those caught up in the hate to physically assault or throw things at the telescreen, as Julia does during the scene.
The film becomes more surreal as it progresses, with Goldstein's face morphing into a sheep as enemy soldiers advance on the viewers, before one such soldier charges at the screen, submachine gun blazing. He morphs, finally, into the face of Big Brother at the end of the two minutes. At the end, the mentally, emotionally, and physically exhausted viewers chant "B-B!...B-B!" over and over again, ritualistically.