What is the function of two minutes of hate? In what why does the two minutes of hate reflect the party's slogans?

The two munutes of hate allows the people to vent their aggression. The telescreens show footage of known enemies and excite the wrath of the brotherhood, inciting boos, hisses, and exclamations of rage. This was followed by a depiction of "Big Brother," which immediately fills the people with feelings of warmth.

"The programmes of the Two Minutes Hate varied from day to day, but there was none in which Goldstein was not the principal figure. He was the primal traitor, the earliest defiler of the Party’s purity."

"Before the Hate had proceeded for thirty seconds, uncontrollable exclamations of rage were breaking out from half the people in the room."

'In its second minute the Hate rose to a frenzy. People were leaping up and down in their places and shouting at the tops of their voices...."

"But in the same moment, drawing a deep sigh of relief from everybody, the hostile figure melted into the face of Big Brother, black-haired, black-moustachio’d, full of power and mysterious calm, and so vast that it almost filled up the screen."