Banned Books Week: Celebrating the Freedom to Read is observed during the last week of September each year. Observed since 1982, the annual event reminds Americans not to take this precious democratic freedom for granted.

Check out this list of the 100 books most frequently banned and/or challenged between 2000 and 2009, compiled by the American Library Association.

Here’s an interesting map of book challenges from 2007-2010.

And a list of 15 iconic movies based on banned books from the Huffington Post.

For more information about why books are challenged, see this list of “challenged classics” — some of the top novels of the 20th century and the reasons they were challenged. Every book on this list can be found in the Mudd Library.

How many banned books have you read?