The books in this list are mostly dystopian stories about oppression, violence, cruelty, coups, civil wars and the downtrodden classes; and some are novels that are based on true stories.
When you read them, they will show you the tragic side of being a human and the human life itself; will help you understand the pains of humanity and 'the others'; and will potentially make you more 'aware', 'understanding' and 'compassionate. Enjoy reading!
Note 1: Just like every book list, this one is also incomplete and flawed, sorry in advance!
Note 2: The order has nothing to do with the quality of the books.