Why do humans fear the song in animal farm?

In George Orwell's "Animal Farm," the song "Beasts of England" represents the hope for a better future and the ideals of rebellion against oppression. However, as the pigs consolidate power, they fear the song because it symbolizes unity among the animals and the potential for revolt against their tyranny. Ultimately, the pigs ban the song to suppress dissent and maintain control, illustrating how those in power often seek to eliminate symbols of resistance that threaten their authority.