Animal Farm is easily the most famous work of political allegory ever written. The animals take over the running of a farm, and everything is wonderful for a while , until the pigs get out of hand. It is a brilliant description of what happens when the revolution goes astray. Allegory is hard to do gracefully, but Orwell manages it , while true appreciation of Animal Farm requires an understanding of the history of the Russian revolution, those without it will still get the point through looking at current political situations. And Animal Farm can even be appreciated as a story by children with no understanding of the political message at all! By far the .most appealing book I've read

Some Trivia

The CIA obtained the film rights to "Animal Farm" from Orwell's widow, Sonia, after his death and covertly funded the production as anti-Communist propaganda. Some sources assert that the ending of the story was altered by the CIA (in the book, the pigs and humans join forces) to press home their message, but it is equally possible that the more upbeat ending of the movie was an artistic decision, to give the film more audience appeal.