Got a favorite book? Well, odds are good there’s someone out there in the United States who’d liked to see it censored. And that’s where Banned Books Week comes in—an annual celebration of literacy in which the spotlight is shone on the problem of censorship in U.S. libraries and bookstores. To quote the Banned Books Week website:

Banned Books Week was launched in 1982 in response to a sudden surge in the number of challenges to books in schools, bookstores and libraries. More than 11,300 books have been challenged since 1982.

This year’s focus is on diversity, and why so many books—like the acclaimed firsthand account of the Holocaust, Anne Frank: The Diary of a Girl (file that ban under: what the hell is wrong with people?), perennial “favorite” Absolutely True Diary of a Part-Time Indian, by Sherman Alexie, Alison Bechdel’s Fun Home, and Jessica Herthel and Jaz Jennings’s I Am Jazz—that celebrate it were among the top titles banned in 2015.

Banned Books Week 2016 is happening right now, September 25 to October 1, so visit the BBW website for more information, including a list of the books they’re celebrating this year.