The Two Minute Hate

When Winston is at work in the ministry of truth,  he has to go through something called the two minute hate. The two minute hate is a daily event where everyone gathers infront of a large screen and are driven into a frenzy of hatred, even to the point of throwing things at the screen. The two minute hate is an interesting event, it's overt purpose seems to be to stir up hatred towards Goldstien and Eur/Eastasia, but it could also serve the purpose of detecting disloyalty in the party members. Whatever it's purpose is, it is never overtly stated, the two minute hate is just something you need to be a part of.