The fragile bonds of civilization that keep society peaceful and orderly are fraying in the face of mobs organized online. Last Sunday, an organized mob of about 4 dozen people attacked a Walmart in Macon, Georgia, intentionally doing damage to displays and merchandise and dragging a man out of motorized cart and throwing him to the floor. The Macon Telegraph reports: The vandals, said to number between 40 and 50, sprinted down the store’s main aisle about 1:50 a.m. Sunday, “destroying merchandise displays and items,” a sheriff’s deputy’s report of the incident noted. Floors in parts of the store were...