In 1844, after the assassination of Mormon leader Joseph Smith by an angry mob in Illinois, the Mormons choose Brigham Young as their new leader and follow him to a new promised land in Utah... Read allIn 1844, after the assassination of Mormon leader Joseph Smith by an angry mob in Illinois, the Mormons choose Brigham Young as their new leader and follow him to a new promised land in Utah.In 1844, after the assassination of Mormon leader Joseph Smith by an angry mob in Illinois, the Mormons choose Brigham Young as their new leader and follow him to a new promised land in Utah.