If we're banning books for those reasons (and Arming America is fraudulent), then I can suggest another worthy entry. But, no, though John O'Neill may have packed his Kerry book with untruths, I still support his right to publish it. (Of course, publishers also have a right to refuse to publish it. That's not censorship. Naturally, Regnery was only too happy to publish the book and that's certainly their right.)
Amnesty International lists authors who are currently being persecuted because of their writing. They also have this poster (PDF) you can print out to promote the week. Scholastic offers advice for teachers on how to promote Banned Books Week when teaching kids and interacting with parents.