What were the sources of the prejudice and discrimination for Mormons?

Answer 1

Joseph Smith, who founded the Mormons, claimed to be a prophet who received revelations from God. Naturally, leaders of other faiths, who did not speak with God, felt threatened by his claims, especially when significant portions of their congregations left to join the Mormons. Mormon doctrine was appealing to many because it seemed logical, and it came with additional scriptures that shed light on otherwise confusing Biblical scriptures. The idea of new scriptures was received as a threat by religions that taught God's words were found exclusively in The Bible. Persecution against Mormons intensified as new revelations lead to their practicing polygamy, which was abhorrent to many. In response to the persecution, the Mormons formed a militia, which many feared they would use for purposes other than self-defense. Joseph Smith was killed while in prison under dubious charges. The Mormons eventually fled the United States in search of religious freedom.