evidence from chapters 4-7 that higlight :

All the animals are afraid Napoleon. If left to make their own decisions, Squealer explains, the animals might make a wrong decision. He also calls Snowball a criminal; even if he was brave in the Battle of the Cowshed (an idea that Squealer also questions), “loyalty and obedience are more important.” Squealer tells the animals, “Discipline, comrades, iron discipline! That is the watchword for today.”