Sometime do a study on the Mormon Doctrine of Blood Atonement.
The idea was that the death of Christ did not pay for certain sins -- rather, a person's blood needed to be spilled to complete the process. Additionally, this would prevent the individual from repeating his evil acts (thus enhancing his "progression to godhood"), and deter others from committing similar acts.
Blood atonement most commonly took the form of beatings and whippings, although an individual caught in indiscretion with someone not "sealed" to him in his harem would be "cut close and square." Persons deemed guilty of especially heinous acts would be "used up."
According to the historian, Hubert Bancroft, in his History of Utah, Mormon disputes over allocation of women (and reallocation to more "more worthy" males) led to six Mormon "civil wars," not to mention dozens (some say hundreds) of murders.
If interested, you can learn more about this terrible Mormon practice HERE, and can see how it continues to plague the Latter Day Saint movement to this day HERE.