Mountain Meadows Massacre

The Mountain Meadows Massacre took place between September 7 and 11, 1857, in southern Utah Territory during the Utah War. At least 120 members of the Baker–Fancher wagon train, mostly immigrant families from Arkansas traveling to California on the Old Spanish Trail, were killed. The perpetrators were settlers belonging to the Church of Jesus Christ of Latter-day Saints (LDS Church) who were part of the Utah Territorial Militia, known officially as the Nauvoo Legion, and they recruited and were aided by some Southern Paiute Native Americans.

After the Baker–Fancher party was refused provisions in Salt Lake City, it traveled south and stopped to rest at Mountain Meadows. Amid war hysteria over a feared federal military invasion of Utah and rumors of hostile behavior by the travelers, local militia leaders including Isaac C. Haight and John D. Lee planned an attack disguised to appear as the work of Native Americans. On September 7, militiamen dressed as Native Americans, along with some Paiutes, attacked the wagon train. The immigrants defended themselves by circling and fortifying their wagons, and a five-day siege followed. Fearing that some emigrants had recognized white attackers, militia commander William H. Dame ordered that the travelers be killed. On September 11, militiamen approached under a flag of truce, offered the emigrants safe escort to Cedar City in exchange for their weapons and livestock, then killed the men, women, and older children as they were being led away from their fortification. Only seventeen children age six and under were spared.

Following the massacre, most bodies were left exposed, and the survivors' property was distributed or auctioned among local Mormon settlers. The surviving children were later retrieved by federal officials, including Superintendent of Indian Affairs Jacob Forney, and returned to relatives in Arkansas. Federal investigations by Judge John Cradlebaugh, Major James Henry Carleton, and Forney found evidence of Mormon involvement, but prosecutions were delayed by the American Civil War. In 1874, nine men were indicted; only John D. Lee was tried. After a first trial ended in a hung jury in 1875, a second trial in 1876 before an all-Mormon jury convicted him. Lee was executed by firing squad at Mountain Meadows on March 23, 1877.

Historians attribute the massacre to a combination of factors, including Mormon teachings during the Mormon Reformation, war hysteria tied to the Utah War, and the contested role of LDS Church president Brigham Young, who is generally regarded by historians as having contributed to the atmosphere that provoked the massacre and to concealing evidence afterward, though scholars debate whether he had advance knowledge of the plan. The site was designated a National Historic Landmark in 2011, and multiple memorials have been erected at Mountain Meadows and in Arkansas.