7– Animal Farm by George Orwell :

One of George Orwell masterpieces is Animal Farm which will make you feel like one of those moments where everything that was clear to you suddenly becomes utterly muddied and you really can’t say what lies beneath the murky waters although a moment before you were sure you could.
When Old Major the boar dies on Manor Farm, two young pigs named Snowball and Napoleon rise to create new leadership in this allegorical book that is supposed to mirror the Russian Revolution of 1917 and the ensuing Stalinist Soviet Union. Animal Farm is a stunning achievement, and not just because Orwell proved that a story about pigs can be terrifying.