Certainly, here are a few examples of modern books that have been banned or challenged in recent years:

1. "The Absolutely True Diary of a Part-Time Indian" by Sherman Alexie - This young adult novel has been banned or challenged in several schools and libraries due to its depictions of alcoholism, poverty, and sexuality.

2. "This One Summer" by Mariko Tamaki and Jillian Tamaki - This graphic novel has been banned or challenged in several schools and libraries due to its depictions of sexuality and mature themes.

3. "George" by Alex Gino - This children's book has been banned or challenged in several schools and libraries due to its portrayal of a transgender child.

4. "The Hate U Give" by Angie Thomas - This young adult novel has been banned or challenged in some schools and libraries due to its depictions of police brutality and racism.

5. "Looking for Alaska" by John Green - This young adult novel has been banned or challenged in some schools and libraries due to its depictions of sexuality, drug use, and controversial themes.

It's worth noting that while these books have been banned or challenged in some places, they have also been widely praised for their important and thought-provoking themes.