1. Harry Potter.
According to the American Library Association, the Harry Potter books are the most challenged books of the 21st century due to their focus on magic.
2. Alaska Young, Looking For Alaska.
The novel was banned in Tennessee due to sexual content and graphic language.
3. Hester Prynne, The Scarlet Letter.
The novel was censored due to its adulterous content. And banned in Russia by Czar Nicolas I.
4. Janie Crawford, Their Eyes Were Watching God.
The book was challenged in Brentsville, Virginia, in 1997 for language and sexual explicitness.
5. Holden Caulfield, The Catcher In The Rye.
Between 1961 and 1982, The Catcher in the Rye was the most censored book in high schools and libraries in the United States.