George Orwell 
Animal Farm (Slow reading series, one more person read Orwell, one more security) [EPUB ebook] 

Animal Farm is one of the most classic works by Orwell, it is an anti-Utopia political allegory which is very impressive. The animals on the farm has conducted a "revolution" successfully, to drive their human masters out of the farm, they built an equal animal society. However, the animal leaders, those clever pigs finally grab the revolution result and became the ruler even more dictatorial and totalitarian than human masters. Criticizer goes like "one more person to watch Orwell, there will be one more freedom".