The story's is the central agent in generating its plot, and this individual can embody the story's theme.

The protagonist or the main character is the one who makes the series of events (plot) possible and/or that these events center on him. His traits, decisions and fate often show the theme or the message of the story. There are even stories where the main character’s name symbolize or suggest the underlying idea of the story.

animal farm, written by george orwell, is a representation of russia after the revolution that led stalin to take over power.

in this excerpt, the central idea seems to be that the animals (a representation of society), when they believe to be working for a greater good and equality, are obedient and productive. they were convinced that, after expelling the owner (jones) from the farm, they would live in harmony and be fairly treated.

as we know, the pigs become the leaders and grow more selfish and dictatorial with time. in the end, they look and act in a way so similar to humans that it is impossible to tell the difference. the ideals of equality are shattered, and the farm turns out to be worse than it was before. the animals are manipulated with false propaganda and forced to work in order to enrich the pigs.

i suggest it is anadiplosis