Luckily the "ban Howard Zinn" bill was never actually passed, and actually led to far more people reading him (Streisand effect there):

> Rep. Kim Hendren’s bill to prohibit use of the late Howard Zinn’s books in Arkansas public schools died quietly in committee, of course, but it had great unintended consequence: Some 700 copies of Zinn’s book, “A People’s History of the United States,” were sent free to teachers and librarians throughout Arkansas thanks to the controversy.

https://arktimes.com/arkansas-blog/2017/04/04/how-kim-hendre...