1 - Alice series, for sexual content, using offensive language, and being unsuited to age group.
2 - Harry Potter series, for its focus on wizardry and magic.
3 - "Of Mice and Men" by John Steinbeck, for using offensive language.
4 - "Arming America: The Origins of a National Gun Culture" by Michael A. Bellesiles, for inaccuracy.
5 - "Fallen Angels" by Walter Dean Myers, for racism, sexual content, offensive language, drugs and violence.
6 - "Go Ask Alice" by Anonymous, for drugs.
7 - "It's Perfectly Normal" by Robie Harris, for homosexuality, nudity, sexual content and sex education.
8 - "We All Fall Down" by Robert Cormier, for offensive language and sexual content.
9 - "King and King" by Linda de Haan, for homosexuality.
10 - "Bridge to Terabithia" by Katherine Paterson, for offensive language and occult/satanism.
I don't know most of these. They also say that 'Captain Underpants' has recently dropped out of this top ten. My kids say this is a perfectly inoffensive story about a mild mannered headmaster who wears enormous underpants outside his trousers, and shoots baddies with an underpants gun. Our children must be protected from this filth.
BTW - when will the psycho fundamentalists realise that 'His Dark Materials' is a million times more theologically subversive that Harry Potter? Incidentally my daughter went to see the theatrical production of this at the National yesterday. She enjoyed it despite some reservations about the adaptation. Imagine an 11 year old sitting through a 2x3 hour performance without complaining. It must be good.