Since Chicago’s archetype Market Square opened in 1916, shopping malls have been synonymous with safety. Their predictability has been a source of security and, for many, a way of life. People exercise at gyms in the morning, attend movies at night; parents use the mall to baby-sit their teenagers; and children visit with Santa and the Easter Bunny, and cavort in play areas. That feeling of well being doesn’t come without a cost, however, particularly in a post-9/11 world ...