As retailers continue to use social media to promote their brand in real-time, they seem to be reacting in almost real-time to pulling a brand from their shelves when it gets caught up in a social media firestorm and threatens to put them on the wrong side of an important issue. Earlier this summer, certain retailers stopped selling goods bearing the Confederate flag after the divisiveness symbol from the Civil War featured prominently in online pictures of Dylann Roof, who is accused of killing nine people in a racially charged shooting in Charleston, S.C., on Friday, June 19. By that...