I don't understand he concept of banning books. I can't believe it still happens. I can't believe the smallness of some of the minds out there.
If you are an adult and you don't like the message in a book then here's a novel idea: don't read it. And if you're a parent and you're concerned about what your child is reading then make sure you act like a parent and stay involved.
And another thing about banning books is that really all it does is give that book more attention. I mean take this interaction as one tiny example; here are two girls who might not have read this book otherwise. The exact opposite result the banning was aiming for I'm sure.