Using propaganda is to persuade people to accept certain beliefs or facts without question. In "Animal Farm", Squealer is in charge of all the propaganda for Napoleon. Squealer uses many of the propaganda techniques to persuade the other animals that everything is all right.
Squealer is a clever and well-spoken pig who can influence the animals in any way with his mastery of language and persuasion. He serves Napoleon as his speaker and is the Minister for propaganda. Every time the animals question an act of Napoleon, no matter how selfish or severe it may seem Squealer is able to convince the animals to accept it. Squealer avoids the truth and speaks lies to support his leader. He can do this because he knows the animals need for reassurance and their natural need to believe the voice of authority. .
When he gives speech to other animals, he uses propaganda techniques of selection, lying, repetition, rhetorical questions, pinpointing the enemy and assertion. We can discuss three short speeches of Squealer to show how he uses techniques and comment associated with propaganda.
The first one is "Milk and Apple Incident". You do not imagine, I hope, that we pigs are doing this in a spirit of selfishness and privilege? Many of us actually dislike milk and apples. I dislike them myself.' We pigs are brainworkers. The whole management and organization of this farm depend on us. It is for your sake that we drink that milk and eat those apples.' This absolutely shows Squealer tells lies to other animals. Do you know what would happen if we pigs failed in our duty? Jones would come back! Yes, Jones would come back! Surely there is no one among you who wants to see Jones come back?' Squealer uses rhetorical questions and pinpointing the enemy here. The other animals don't need to think, they really don't want Jones' back. They submit to Squealer's authority. Squealer puts forward a message which identifies an enemy, real or imagined, can help the propagandist.