As Mayor of Nauvoo, Joseph Smith ordered the destruction of a printing press which was printing publications that caused many fights, riots, and unrest in the city. The owners of the printing press were taking him to court for violation of their first amendment rights. He was held in jail awaiting his trial supposedly for the safety of himself and his family, so that mobs would not come to his home and hurt his wife and children.
In 1844, William Law and Robert Foster, disagreed with Smith about how to manage the economy of the Mormon city of Nauvoo in Illinois, as well as saying that Smith had proposed marriage to both their wives. As Mayor of Nauvoo, Joseph Smith ordered the destruction of a printing press which Law and Foster had used to publish the Nauvoo Expositor, in which they called for reform within the Mormon church and appealed to the county's broader community. Law and Foster had also procured indictments against Smith for perjury and polygamy.
Wikipedia explains that destruction of the newspaper provoked a strident call to arms from Thomas C. Sharp, editor of the Warsaw Signal and longtime critic of Smith. Fearing an uprising, Smith mobilised the Nauvoo Legion, an autonomous militia he also led, and declared martial law. A small detachment of the state militia was mobilised and Governor Thomas Ford threatening to raise a larger militia unless Smith and the Nauvoo city council surrendered themselves. Smith and his brother were jailed on a charge of inciting a riot. This was upgraded to a charge of treason, probably at least in part because of the supposed state of emergency in Nauvoo.
Joseph Smith is buried in the Smith Family cemetery in Nauvoo, Illinois. He is buried next to his wife and his brother Hyrum who was killed at the same time Joseph was.
Joseph Smith said that Nauvoo meant "beautiful place".
Joseph Smith was killed by a mob while awaiting trial in Carthage, Illinois. The trial was based on his ordering the destruction of a printing press that was causing civil disorder in Nauvoo, where he was mayor.
Joseph Smith Jr and his brother Hyrum, were murdered by a mob of about 150 men who stormed the Carthage Jail in Carthage, Illinois on June 24, 1844.
I believe you are thinking of Joseph Smith and Hyrum Smith, leaders of the Mormon church (officially called the Church of Jesus Christ of Latter-day Saints) which was based in Nauvoo. However, they were actually killed in Carthage as they were awaiting a trial.
Joseph Smith was murdered in the jailhouse at Carthage, Illinois on June 27, 1844. He was being held in the jailhouse awaiting trial for ordering the destruction of a printing press for "disturbing the peace" in Nauvoo, where he was Mayor.
Emma Hale Smith Bidamon, Joseph Smith Jr.'s wife, died at the age of 75 in Nauvoo, Illinois. The causes of her death are due to her old age. She had become sick a few weeks before and her condition only worsened.
Joseph Smith did many things in Nauvoo. He was the mayor, he founded a temple (which was later burned by those attacking the church), he set up a school, he formed a militia, he shut down a printing press, etc.
Church headquarters moved from Palmyra New York to Kirtland Ohio to Independence Missouri to Nauvoo Illinois while Joseph Smith was alive. After he was killed, Church headquarters moved to Salt Lake City, Utah.
Many newspapers have printed lies about the Mormon Church, but I believe you may be referring to the Nauvoo Expositor, which Joseph Smith (as mayor of Nauvoo) had destroyed beacuse they were causing an uproar in the town. (This was also the action for which he was jailed, and this inprisonment allowed his assasination) The Nauvoo Expositor printed only one issue. Joseph Smith, as mayor, had their printing press destroyed as punishment for disturbing the peace, and they never printed anything again. They didn't really have a reason to print anything else, as after that Joseph was dead and the Mormons moved out of the state.
Joseph Smith
Joseph Smith, Jr.'s gravesite is in Nauvoo, Illinois near the Smith Homestead. He is buried with his wife, Emma Smith, and his brother, Hyrum. The site is currently owned by the Community of Christ (formerly known as the Reorganized Church of Jesus Christ of Latter Day Saints). Click the "Related Link" below to see a photo.