They're banning all the good books.
To Kill A Mockingbird - due to the N word I believe (though back when the book was based, the N word was common)
Of Mice and Men - same issue I believe
IIRC, most Stephen King and Anne Rice books have been removed, I remember hearing about R L Stine books (Goosebumps) being removed. Too bad too, because I used to love Goosebumps books as a kid.
SK and AR write good books too!
here's a good site with a downloadable PDF of banned/challenged books. I'm 22 and I've read the majority of the books on the list, some of them even when I was in school.
*ETA* Not all the banned books are listed. It's not the list I read through awhile ago, but it has plenty from the list I'm thinking of.
here's another list