How many banned books have you read?

Have you ever wondered where challenges to books in the United States actually occur? A new book censorship map illustrates that censorship efforts take place all across the country.

The American Library Association has named September 26th - October 3rd as Banned Books week. Observed since 1982, this annual ALA event reminds Americans not to take this democratic freedom for granted.

According to the ALA there were at least 513 challenges to books in schools and libraries in the United States in 2008. But the total is far larger, as most cases are never reported.

A list of classic books that have been challenged can be found here.