Joseph Smith, the founder and leader of the Latter Day Saint movement, and his brother, Hyrum Smith, were killed by a mob in Carthage, Illinois, United States, on June 27, 1844, while awaiting trial in the town jail.

Joseph Smith Jr. was an American religious leader and the founder of Mormonism and the Latter Day Saint movement. Publishing the Book of Mormon at the age of 24, Smith attracted tens of thousands of followers by the time of his death fourteen years later. The religion he founded is followed to the present day by millions of global adherents and several churches, the largest of which is the Church of Jesus Christ of Latter-day Saints.