The two minutes hate is a big form or propaganda. The audio and visual is aimed at brainwashing members of the party. People get worked into a frenzy, and even Winston can't help but screaming along with them - even though he probably doesn't really want to.

To add to Doctor OKO's, this also makes the people, with such supressed emotion and feeling often talk in their sleep against Big Brother, which is followed by their arrest.

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"Now listen peoples, I'm gonna show you how to play the blues. Now you just sit here, and watch me."