“Though most early Latter-day Saint converts were from the Northern States and were opposed to slavery, slavery affected Church history in a number of ways. In 1832, Latter-day Saints who had settled in Missouri were attacked by their neighbors, who accused them of “tampering with our slaves, and endeavoring to sow dissensions and raise seditions amongst them.” That winter, Joseph Smith received a revelation that a war would begin over the slave question and that slaves would “rise up against their masters.” The next year, concerns that free black Saints would gather to Missouri was the spark that ignited further violence against the Saints and led to their expulsion from Jackson County.”
“In the mid-1830s, the Saints tried to distance themselves from the controversy over slavery. Missionaries were instructed not to teach enslaved men and women without the permission of their masters. The Church’s newspaper published several articles critical of the growing abolitionist movement. After the Saints had been driven from Missouri and had settled in Illinois, however, Joseph Smith gradually became more outspoken in his opposition to slavery. He asked how the United States could claim that “all men are created equal” while “two or three millions of people are held as slaves for life, because the spirit in them is covered with a darker skin than ours.” As a U.S. presidential candidate in 1844, Joseph called for the federal government to end slavery within six years by raising money to compensate former slaveholders.”
“By the time the Saints migrated to Utah, there were both free and enslaved black members of the Church. Green Flake, Hark Lay, and Oscar Crosby, members of the vanguard 1847 pioneer company, were enslaved to Mormon families at the time of their pioneer journey. In 1852, Church leaders serving in Utah’s legislature debated what to do about black slavery in Utah Territory. Brigham Young and Orson Spencer spoke in favor of legalizing and regulating slavery, allowing enslaved men and women to be brought to the territory but prohibiting the enslavement of their descendants and requiring their consent before any move. This approach would guarantee the eventual end of slavery in the territory. Apostle Orson Pratt gave an impassioned speech against any compromise with the practice of slavery: “[To] bind the African because he is different from us in color,” he said, “[is] enough to cause the angels in heaven to blush.” Young and Spencer’s position prevailed, and the legislature authorized a form of black slavery that demanded humane treatment and required access to education.”
“During the 1850s, there were about 100 black slaves in Utah. In 1861, the Civil War broke out in the United States over the question of slavery, as Joseph Smith had prophesied. On June 19, 1862, the United States Congress ended slavery in U.S. territories, including Utah.”