Specifically, John Green's Looking for Alaska to the Waukesha Public Library in Waukesha, WI. It seems some parents have freaked out there recently after finding the book on their children's recommended reading lists from school and then discovering that -- gasp! -- the book dares to mention sex. Said parents are trying to get the book put behind the library counter in school libraries so that children have to get their parents' permission to read.
Read about it here, then do a good deed and send the WPL a copy, because apparently, they're all checked out.
Spread the word! Reading is, after all, fundamental.