I googled it because I couldnt remember the specific details:
A polygamist, Young had at least 56 wives and 57 children. He formalized the prohibition of black men attaining priesthood, and led the church in the Utah War against the United States.[4]
What's doubly amusing is that he was very much an outlier in his day, hence the need to GTFO of Missouri after Joseph Smith got himself shot. A nicely layered meme, if I do say so myself.