In a country that put 75 million additional guns into circulation over the past two decades, routine altercations can turn deadly. When fear drives firearms ownership, it can lead to unsafe gun handling that ends in unintentional shootings. As an exclusive for our Bulletin subscribers, The Trace's Jennifer Mascia culled September's headlines for the latest examples of the myriad ways that gun violence can erupt in the United States. - Because a man's credit card was... (GunPolicy.org)