Gun violence is all-pervasive in America. But the gut-wrenching images that have angered and repelled the world are of mass shootings, where innocent children have been killed in their classrooms: at a place where children are supposed to be safe and protected. The injured, and those who survived, are traumatised and scarred for life. We need not go far back into history. The Sandy Hook elementary school shooting in Connecticut in December 2012 rattled everyone, irrespective of which corner of the world they lived. As many as 26, including 20 children between the ages of six and seven, and teachers were killed by a lone gunman, who began the bloodbath by shooting his mother before proceeding to the school. He later turned the gun on himself. The shooter was a 20-year-old.