"Banned Books Week is the only national celebration of the freedom to read. It was launched in 1982 in response to a sudden surge in the number of challenges to books in schools, bookstores and libraries. More than a thousand books have been challenged since 1982. The challenges have occurred in every state and in hundreds of communities. Click
here (
http://bannedbooksweek.org/Mapofbookcensorship.html ) to see a map of book bans and challenges in the US from 2007 to 2009. People challenge books that they say are too sexual or too violent. They object to profanity and slang, and they protest against offensive portrayals of racial or religious groups--or positive portrayals of homosexuals. Their targets range from books that explore contemporary issues and controversies to classic and beloved works of American literature.
According to the American Library Association, out of 460 challenges reported to the Office of Intellectual Freedom in 2009.
ttyl; ttfn; l8r, g8r (series), by Lauren Myracle
Reasons: nudity, sexually explicit, offensive language, drugs,
and unsuited to age group
And Tango Makes Three, by Peter Parnell and Justin Richardson
Reasons: homosexuality
The Perks of Being a Wallflower, by Stephen Chbosky
Reasons: drugs, homosexuality, nudity, offensive language, sexually
explicit, suicide, and unsuited to age group
To Kill a Mockingbird, by Harper Lee
Reasons: racism, offensive language, unsuited to age group
Twilight (series), by Stephanie Meyer
Reasons: sexually explicit, religious viewpoint, unsuited to age group
Catcher in the Rye, by J.D. Salinger
Reasons: sexaully explicit, religious viewpoint, unsuited to age group
My Sister's Keeper, by Jodi Picoult
Reasons: sexism, homosexuality, sexually explicit, offensive language, unsuited to age group, drugs, suicide, violence
The Earth, My Butt, and Other Big, Round Things, by Carolyn Mackler
Reasons: sexually explicit, offensive language, unsuited to age group
The Color Purple, by Alice Walker
Reasons: sexually explicit, offensive language, unsuited to age group
The Chocolate War, by Robert Cormier
Reasons: nudity, sexually explicit, offensive language, unsuited to age group
see more at
http://bannedbooksweek.org/info.html 
