Why Partyism Is Wrong

A college student came to me recently with a quandary. He’d spent the summer interning at a conservative think tank. Now he was applying to schools and companies where most people were liberal. Should he remove the internship from his résumé?

I advised him not to. Even if people disagreed with his politics, I argued, they’d still appreciate his public spiritedness. But now I’m thinking that advice was wrong. There’s a lot more political discrimination than I thought. In fact, the best recent research suggests that there’s more political discrimination...