"Because an AR-15, or a variant, was reportedly used in several mass shootings — including Aurora, Colorado; Newtown, Connecticut; San Bernardino, California; Sutherland Springs, Texas; Las Vegas and Parkland, Florida, in which a total of 154 people were killed — this civilian sibling of a military assault rifle is an exceptionally polarizing product of modern American industry. The AR-15 and its semiautomatic cousins — they shoot one round for each pull of the trigger ─ incite repulsion among those who see them as excessive, grotesque and having no place on the civilian market. It is the focus of multiple attempts at prohibition, which in turn has prompted people to run out and buy more. Such “panic buying” drove sales of AR-15s to record levels during the presidency of Barack Obama and the 2016 presidential campaign."