Brigham's Destroying Angels

How did how the infamous "Blood Atonement Doctrine" inspire and lead to the many murders of the people by Brigham's "destroying angels," "avenging angels," "strikers," or members of his "(Brigham's posse)" as they were known at the time? What was Bill Hickman's testimony about his role in Brigham Young's posse? How many o f Brigham Young's doctrines that he introduced to the church have now been discarded and repudiated?

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