Sept. 22, 2013 -- intro: You can't keep a good book down.
That's the reason why booksellers, librarians, publishers, teachers and a huge community of avid readers around the world gather each year in the last week of September to champion suppressed literature and the freedom to seek and express ideas.
Banned Books Week was first launched in 1982 in response to a sudden surge in the number of challenges to books in schools, bookstores and libraries, according to the American Library Association (ALA). Since then, more than 11,300 books have been challenged in libraries or schools.
Even in 2012, the Office of Intellectual Freedom recorded 464 challenges, but the ALA estimates that up to 80 percent are never even reported.
Among the literary works highlighted in this year's Banned Book Week, held Sept. 22 to 28 in the U.S., a list of top 10 challenged titles were plucked out of a catalogue of submissions from readers or various media reports around the world.
See if you recognize any of the following heroes of this year's Banned Books fair:
quicklist: 1 title: "Captain Underpants" (series) by Dav Pilkey text: Reasons: Offensive language, unsuited for age group
quicklist: 2 title: "The Absolutely True Diary of a Part-Time Indian" by Sherman Alexie text: Reasons: Offensive language, racism, sexually explicit, unsuited for age group
quicklist: 3 title: "Thirteen Reasons Why" by Jay Asher text: Reasons: Drugs/alcohol/smoking, sexually explicit, suicide, unsuited for age group
quicklist: 4 title: "Fifty Shades of Grey" by E. L. James text: Reasons: Offensive language, sexually explicit media: 20329109
quicklist: 5 title: "And Tango Makes Three" by Peter Parnell and Justin Richardson text: Reasons: Homosexuality, unsuited for age group media: 20329163
quicklist: 6 title: "The Kite Runner" by Khaled Hosseini text: Reasons: Homosexuality, offensive language, religious viewpoint, sexually explicit
quicklist: 7 title: "Looking for Alaska" by John Green text: Reasons: Offensive language, sexually explicit, unsuited for age group
quicklist: 8 title: "Scary Stories" (series) by Alvin Schwartz text: Reasons: Unsuited for age group, violence
quicklist: 9 title: "The Glass Castle" by Jeanette Walls text: Reasons: Offensive language, sexually explicit
quicklist: 10 title: "Beloved" by Toni Morrison text: Reasons: Sexually explicit, religious viewpoint, violence