_ On Sept. 11, 1857, Mormon guerrillas, stoked by a deep resentment of decades of public abuse and federal interference, murder 120 emigrants at Mountain Meadows, Utah. The conflict apparently began when the Mormons refused to sell the emigrants any supplies._ On Sept. 10, 1897, a 25-year-old London taxi driver named George Smith becomes the first person ever arrested for drunk driving. A true breath test didn't come along until 1931 with a device called the Drunkometer. It involved a blow-up balloon and a tube filled with a purple fluid (potassium permanganate and sulfuric acid). Alcohol on a person's breath ...