How my NPR colleague failed at “viewpoint diversity”

I was in San Antonio last weekend for a book festival, and took an early-morning run along the city’s River Walk. The paths go beside the water and below the streets, which cross the river on Art Deco bridges. A city looks different from underneath; you feel its layers of history.

Up at street level the book festival was underway, and in a tent filled with people I talked about Differ We Must, my biography of Lincoln as seen through his encounters with people who disagree with him. Moderator Dan Goodgame, editor of Texas Monthly, took the occasion to ask about an item in the news. NPR senior business editor Uri Berliner had written an article criticizing the people who work with him. His article alleged that his colleagues are unanimously progressive and publish progressive stories without any debate—a failure of “viewpoint diversity.” What did I make of that?