Controversial Books that you must read

I'll start the list:

1. Lord of the Flies
2. Catcher in the Rye
3. Death of a Salesman

What else?

>>5
You know, that question really threw me off guard. I have no idea if you're a troll or not... But only because for five years, until we read it in our senior high school class, I thought it was about beavers.