If you encountered someone who made his own granola, bought his veggies at a food co-op, wore Birkenstock sandals, and wanted to save the environment, if you’re like me, you’d probably think, well, there goes a lefty, or a liberal, or maybe an aging hippie. But the author of a new book says someone like that is just as likely to be a conservative Republican. In his book, Crunchy Cons, journalist Rod Dreher writes about a group of people he calls “crunchy conservatives,” a group that includes, among others, “hip homeschooling mamas,” “Birkenstocked Burkeans,” “gun-loving organic” farmers, and “right-wing nature...