On this day in history, September 7, 1857... Attacks began on a wagon train of families from Arkansas making its way to California by members of the Nauvoo Legion, a militia composed southern Utah's Mormon settlers. Approximately 120 people--mostly women and children--were murdered under the illusion that their wagon train was being escorted under the protection of militia, and away from hostile Native Americans. Local residents had heard rumors that the U.S. Army was en route to put down the growing Mormon movement, so the wagon train was viewed with suspicion. Twenty years after the massacre, John D. Lee, who participated in the murders, was tried, convicted, and executed by a firing squad on the very spot that the massacre took place.