Sin in haste, repent at leisure: Target is launching a first-of-its-kind one-day sale to try and boost back-to-school shopper traffic amid a boycott over its bathroom policy. The retailer is offering a 10% discount on everything in its stores and online on Sunday. Target is calling the event #TargetRunDay. It marks the first time Target has ever offered a 10% discount both in stores and on its website. The sale comes after Target last week reported its first quarterly traffic decline in more than two years. This is what happens when you blindly hop on the social-justice bandwagon without consulting...