The document discusses banned books and provides information about commonly banned titles and reasons for banning. It lists sources that were consulted and provides details on court cases from 1949 and 1972 that ruled books could not be banned. Statistics are presented on the number of reported book challenges from 1990 to 2000 and increasing challenges over the last 9 years. The most common reasons books are banned are identified as offensive language, racism, sexually explicit content, and being unsuitable for an age group.