Columbia County, Ark. — There’s no sign of it here in Magnolia, Ark., but the boycott season is upon us, and graduates of Princeton and Bryn Mawr are demanding “justice” from Wal-Mart, which is not in the justice business but in the groceries, clothes, and car-batteries business. It is easy to scoff, but I am ready to start taking the social-justice warriors’ insipid rhetoric seriously — as soon as two things happen: First, I want to hear from the Wal-Mart-protesting riffraff a definition of “justice” that is something that does not boil down to “I Get What I Want, Irrespective...