Books usually are challenged with the best intentions—to protect others, frequently children, from difficult ideas and information.
Censorship can be subtle, almost imperceptible, as well as blatant and overt, but, nonetheless, harmful. As John Stuart Mill wrote in On Liberty: "If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind. Were an opinion a personal possession of no value except to the owner; if to be obstructed in the enjoyment of it were simply a private injury, it would make some difference whether the injury was inflicted only on a few persons or on many. But the peculiar evil of silencing the expression of an opinion is, that it is robbing the human race; posterity as well as the existing generation; those who dissent from the opinion, still more than those who hold it. If the opinion is right, they are deprived of the opportunity of exchanging error for truth: if wrong, they lose, what is almost as great a benefit, the clearer perception and livelier impression of truth, produced by its collision with error."
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:
- the material was considered to be "sexually explicit"
- the material contained "offensive language"
- the materials was "unsuited to any age group"
Although this is a commendable motivation, Access to Library Resources and Services 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.
As Supreme Court Justice William J. Brennan, Jr., in Texas v. Johnson, said most eloquently: "If there is a bedrock principle underlying the First Amendment, it is that the government may not prohibit the expression of an idea simply because society finds the idea itself offensive or disagreeable." - ALA