Looking for hard to read books ?

Looking for hard to read books, not by total page count or something, but rather, it should make your mind messed up and make a good cocktail of imotions.

Other titles of this post would be: " controversial books to read " or maybe " ahead of their time books " , why ahead of their time because almost all books I mentioned here were either banned or made people uncomfortable to read it.

Some books for example would be :

lolita, lady chatterley's lover, brave new world, 1984, the catcher in the ray, the kite runner, 13 reasons why, Crime and Punishment,A Clockwork Orange, brothers karamazov