The great schism in the American body politic about guns, gun violence and mass shootings began on December 7, 1993; when, a Jamaican immigrant, Colin Ferguson, got    on the  subway     at the Flatbush Avenue Station in Brooklyn. He took that train to the Jamaica stop, and changed trains, boarding the Long Island Railroad,    heading east. He was carrying a Ruger P89 semi automatic pistol. And 160 rounds of ammunition.   "As the train approached the  Merillon Avenue station  in  Garden City Park ,  Long Island , Ferguson drew the gun, dropped several cartridges on the ground, stood up, and opened fire at random. During the next three minutes, he killed six people and injured another nineteen. Some passengers mistook the gunshots for caps or fireworks until a woman shouted, "He's got a gun! He's shooting people!"  Ferguson walked east (forward) on the train, pulling the trigger steadily about every half second. Several pas...