Dan Brown......or whoever really wrote the Da Vinci Code....specifically mentions the KKK.........so many levels of meaning.

The Da Vinci Code - Kids-In-Mind.com

https://kids-in-mind.com/d/davincicode.htm

The Da Vinci Code | 2006 | PG-13 | - 5.7.4. Based on Dan .... We see a photo of people wearing robes that look like those worn by the Ku Klux Klan. We see ...