Despite repeated tragedies, Americans cling to their guns

I have been fortunate enough to travel to more than a dozen countries in what might be considered the modern, civilized world. I've been to several countries in Europe, the Caribbean and Asia. I live in Canada and, as is the case with most Canadians, I have made more trips to the United States than I can keep track of. With one exception, no modern country of which I am aware allows its citizens to walk around carrying guns. The exception is, of course, the United States.