I recommend: Animal Farm, by George Orwell. My apologies for the unattractive visual below.
If you’ve never read this book, pick it up and start today. It’s not terribly long and is definitely worth your time. Animal Farm is an allegory of totalitarian government, using pigs as the perpetrators. In my opinion, the best part is Orwell’s skill at using farm animals to portray various responses to the government.
I listened to the audio book, read by Richard Matthews. But the edition above has the most suitable cover.