Banned Books: challenging our freedom to read by 
Banned books : 2001 resource book by 
100 Banned Books by 1) The Absolutely True Diary of a Part-Time Indian, by Sherman Alexie
Reasons: anti-family, cultural insensitivity, drugs/alcohol/smoking, gambling, offensive language, sex education, sexually explicit, unsuited for age group, violence. Additional reasons: “depictions of bullying”
2) Persepolis, by Marjane Satrapi
Reasons: gambling, offensive language, political viewpoint. Additional reasons: “politically, racially, and socially offensive,” “graphic depictions”
3) And Tango Makes Three, Justin Richardson and Peter Parnell
Reasons: Anti-family, homosexuality, political viewpoint, religious viewpoint, unsuited for age group. Additional reasons: “promotes the homosexual agenda”
4) The Bluest Eye, by Toni Morrison
Reasons: Sexually explicit, unsuited for age group. Additional reasons: “contains controversial issues”
5) It’s Perfectly Normal, by Robie Harris
Reasons: Nudity, sex education, sexually explicit, unsuited to age group. Additional reasons: “alleges it child pornography”
6) Saga, by Brian Vaughan and Fiona Staples
Reasons: Anti-Family, nudity, offensive language, sexually explicit, and unsuited for age group. Additional reasons:
7) The Kite Runner, by Khaled Hosseini
Reasons: Offensive language, unsuited to age group, violence
8) The Perks of Being a Wallflower, by Stephen Chbosky
Reasons: drugs/alcohol/smoking, homosexuality, offensive language, sexually explicit, unsuited for age group. Additional reasons: “date rape and masturbation”
9) A Stolen Life, Jaycee Dugard
Reasons: drugs/alcohol/smoking, offensive language, sexually explicit, and unsuited for age group
10) Drama, by Raina Telgemeier
Reasons: sexually explicit
(Out of 311 challenges as recorded by the Office for Intellectual Freedom)
Often challenges are motivated by a desire to protect children from “inappropriate” sexual content or “offensive” language. The following were the top three reasons cited for challenging materials as reported to the Office of Intellectual Freedom:
1. The material was considered to be "sexually explicit"
2. The material contained "offensive language"
3. The materials was "unsuited to any age group"
Although this is a commendable motivation, Free Access to Libraries for Minors, an interpretation of the Library Bill of Rights (ALA's basic policy concerning access to information) states that, “Librarians and governing bodies should maintain that parents—and only parents—have the right and the responsibility to restrict the access of their children—and only their children—to library resources.” Censorship by librarians of constitutionally protected speech, whether for protection or for any other reason, violates the First Amendment.
-http://www.ala.org/bbooks/about