What is character shift in animal farm?

In George Orwell's "Animal Farm," character shift refers to the transformation of the animals, particularly the pigs, as they gain power and authority. Initially, the pigs advocate for equality and freedom from human oppression, but as they become more corrupt, they adopt the same oppressive behaviors they once rebelled against. This shift highlights the themes of power, betrayal, and the cyclical nature of tyranny, ultimately illustrating how revolutionary ideals can be subverted. The gradual change in characters, especially Napoleon, reflects the broader commentary on political corruption and the betrayal of revolutionary principles.