On Sunday mornings Squealer, holding down a long strip of paper with his trotter, would read out to them lists of figures proving that the production of every class of foodstuff had increased by two hundred percent, three hundred percent, or five hundred percent, as the case might be. The animals saw no reason to disbelieve him, especially as they could no longer remember very clearly what conditions had been like before the Rebellion. All the same, there were days when they felt that they would sooner have had less figures and more food. –Animal Farm,
George Orwell

What technique is used in the passage to promote propaganda?

What is the purpose of Squealer’s use of propaganda?