The American Library Association's Office on Intellectual Freedom keeps track of challenges books.
| The Great Gatsby, by F. Scott Fitzgerald | The Catcher in the Rye, by JD Salinger |
| The Grapes of Wrath, by John Steinbeck | To Kill a Mockingbird, by Harper Lee |
| The Color Purple, by Alice Walker | Ulysses, by James Joyce |
| Beloved, by Toni Morrison | The Lord of the Flies, by William Golding |
| Satanic Verses, by Salman Rushdie | 1984, by George Orwell |
ALA's list of most challenged books 2000-2009
1. Harry Potter (series), by J.K. Rowling
2. Alice series, by Phyllis Reynolds Naylor
3. The Chocolate War, by Robert Cormier
4. And Tango Makes Three, by Justin Richardson/Peter Parnell
5. Of Mice and Men, by John Steinbeck
6. I Know Why the Caged Bird Sings, by Maya Angelou
7. Scary Stories (series), by Alvin Schwartz
8. His Dark Materials (series), by Philip Pullman
9. ttyl; ttfn; l8r g8r (series), by Lauren Myracle
10. The Perks of Being a Wallflower, by Stephen Chbosky
11. Fallen Angels, by Walter Dean Myers
12. It’s Perfectly Normal, by Robie Harris
13. Captain Underpants (series), by Dav Pilkey