Be daring. Read a banned book during Banned Books Week, Sept. 21-27. Or have you already?

This is the American Library Association’s list of the 10 most frequently challenged books of 2013.

1. Captain Underpants (series), by Dav Pilkey. Reasons: Offensive language, unsuited to age group, violence.

 

 

2. The Bluest Eye, by Toni Morrison. Reasons: Offensive language, sexually explicit, unsuited to age group, violence.

 

 

3. The Absolutely True Diary of a Part-Time Indian, by Sherman Alexei. Reasons: Drugs/alcohol/smoking, offensive language, racism, sexually explicit, unsuited to age group.

 

 

4. Fifty Shades of Grey, by E.L. James. Reasons: Nudity, offensive language, religious viewpoint, sexually explicit, unsuited to age group.

 

 

5. The Hunger Games, by Suzanne Collins. Reasons: Religious viewpoint, unsuited to age group.

 

 

 

6. A Bad Boy Can Be Good for A Girl, by Tanya Lee Stone. Reasons: Drugs/alcohol/smoking, nudity, offensive language, sexually explicit.

 

 

7. Looking for Alaska, by John Green. Drugs/alcohol/smoking, sexually explicit, unsuited to age group.

 

 

8. The Perks of Being a Wallflower, by Stephen Chbosky. Reasons: Drugs/alcohol/smoking, homosexuality, sexually explicit, unsuited to age group.

 

 

9. Bless Me Ultima, by Rudolfo Anaya. Reasons: Occult/Satanism, offensive language, religious viewpoint, sexually explicit.

 

 

10. Bone (series), by Jeff Smith. Reasons: Political viewpoint, racism, violence.

 

 

 

Click here to see a list of 21 Nobel laureates whose books have been banned.