When you think of "objectionable books", does a children's story about penguins immediately pop into mind?
Well, apparently "And Tango Makes Three", about a family of penguins with two fathers, is once again at the top of the list of library books that the public objects to the most, according to the American Library Association.
Evidently, the people complaining worry that young children "will believe that homosexuality is a lifestyle that is acceptable," says Judith King, director of the ALA's Office for Intellectual Freedom.
Under the ALA definition, a "challenge" is a formal written complain filed with a library or school requesting that materials be removed because of the content or appropriateness.
What other books are on this year's Top 10 List? Maya Angelou's "I Know Why the Caged Bird Sings", Mark Twain's "The Adventures of Huckleberry Finn", and Philip Pullman's "The Golden Compass", among others.
Although the number of library challenges has dropped from 546 in 2006 to 420 last year, at least 65 challenges last year led to a book being pulled from the shelves.
What are your thoughts on library challenges?