How does Overwell present corruption of idealism in Animal Farm?

In "Animal Farm," George Orwell illustrates the corruption of idealism through the gradual betrayal of the animals' revolutionary principles by their leaders, particularly the pigs. Initially, the animals aspire to create an egalitarian society free from human oppression, but as the pigs gain power, they manipulate language and ideology to justify their increasingly authoritarian rule. The famous shift from "All animals are equal" to "All animals are equal, but some animals are more equal than others" epitomizes this betrayal, demonstrating how noble ideals can be distorted to serve the interests of a privileged few. Ultimately, Orwell critiques how power can corrupt even the most well-intentioned revolutionary movements.