During the Civil War the Mormons sided with the slave states. BY and his fellow apostles called Lincoln evil, an agent of the devil, since he wanted to rid the world of the twin legacies of barbarism, slavery and polygamy. Brigham wanted the Confederacy to triumph, dividing the US and enabling the Mormon theocracy to establish its de facto independence. It was also anger that federal law would prevail over states' preferences that put the South and Utah on the same page regarding states' rights and even gun control.
For the church now to claim affinity with black Americans is hilarious. The historical parallel was with slave owners, not slaves.
Deseret/Utah was a slave territory. Some Mormons owned slaves, including Brigham. When mormons went to settle California, they brought their slaves (both black and native) with them.
One of the ways that makes Mormons really delusional is how they don't know/aren't taught/don't believe how Mormons drew first blood in Missouri, how they announced they would root non-Mormons out to make Davies County (or wherever it was) a Mormons-only region. They refuse to tell the Mormons about Sidney Rigdon's "Salt Sermon." They refuse to tell the members the real reason why Brigham Young had the members suddenly skeedaddle. They refuse to tell the members that, in spite of Young et al. telling them they were in "mortal danger," nothing happened to those Mormons who chose not to follow Young. They don't mention how the church was in trouble with the government over counterfeiting. They don't mention that Smith was jailed for having violated the 1st Amendment, for propositioning other women, and for general things that Mormons did that were contrary to common law. They don't mention that it was BY who sentenced the handcart companies to the hell they went through, because he wanted to use the immigrant money to buy a steam engine that he really, really wanted (and then never used). Of course, that created a deadly situation that the church uses today as an inspiring object lesson, how the people loved the Lord and the church soooo much that they endured the worst kinds of death to join the saints in the Rocky... Blurgh. You know the rest.
So I wrote a comment in the Trib saying some of the above, but they deleted it.