...[Former Indiana governor Mitch Daniels] upset Stanford University professor Sam Wineburg by invoking Wineburg’s criticisms of Zinn to defend his own stance. Wineburg objected to Daniels using his work to rationalize a ban on the textbook.

“This is not about Zinn, per se,” Wineburg told the Star. “This is about whether in an open democratic society we should be exposed — whether you’re in ninth grade or seventh grade or a freshman at Purdue — whether you should be exposed to views that challenge your own cherished view.”

In a tweet directed at Daniels, Wineburg wrote: “How could I possibly agree that ‘banning Zinn’ makes sense when I assign him in my own classes?”...