How are the Mormon Fundamentalists and mainstream Mormons alike and different?

This tends to be a touchy subject, because the mainstream LDS Church generally tries to distance themselves from the fundamentalist groups, presumbably because they are weary of dealing with their embarrassing polygamist past, and the modern-day fundamentalists tend to keep that subject in the forefront of people's thinking when they hear the word "Mormon". Doctrinally, there are few differences between mainstream Mormons and Mormon Fundamentalists. They uphold the same books as scripture; they revere the same early prophets, such as Joseph Smith and Brigham Young, as prophets of God. And generally speaking, the historical doctrines of Mormonism are held and taught by both groups, though mainstream Mormons tend to avoid publicly discussing certain doctrines that make them appear opposed to mainstream Christianity.) Functionally, the Fundamentalist groups are different organizations, and do not answer to any of the mainline LDS authorities, or vice-versa. Most groups have their own ...  more