looking for books with a social commentary

I just started reading books in my free time and was looking for books with social commentary or with a message dealing with social or government issues. I just finished Fahrenheit 451 and loved it, and I’m going to start 1984 soon. I read Animal Farm, TKAM, and Lord of the Flies in high school and loved them. The Great Gatsby, Of Mice and Men, and Huck Finn were pretty good, too, but I didn’t like them as much as the others.