In Nauvoo, Illinois, conflict was often based on the tendency of Mormons to "dominate community, economic, and political life wherever they landed." The city of Nauvoo had become the largest in Illinois, the city council was predominantly Mormon, and the Nauvoo Legion (the Mormon militia) continued to grow. Other issues of contention included polygamy, freedom of speech, anti-slavery views during Smith's presidential campaign, and the deification of man. After the destruction of the press of the "Nauvoo Expositor", Smith was arrested and incarcerated in Carthage Jail, where he was killed by a mob on June 27, 1844. The conflict in Illinois became so severe that most of the residents of Nauvoo fled across the Mississippi River in February 1846.