Every day there is a ‘Two Minutes’ Hate. People are expected to behave insanely, violently, with their hatred directed to a particular source.
By creating an enemy, and ramping up the anger and hatred of the people and directing it as a ‘safe’ source is a way The Party remains in control.
This ‘daily dose’ of hatred is enlarged by having a special Hate Week, set at the hottest time of the year, releases the pressure.
Given a target for their anger and hatred, they can dump all their discomfort, suffering, anger into an acceptable time, place and direction.
Winston and Julia have to participate in the preparations. When they can meet they lie on the bed in the rented room, and relax in each other’s company.