"Blood atonement" is the controversial concept that there are certain sins to which the atonement of Jesus does not apply, and before a Mormon who has committed such sins can achieve the highest degree of salvation, he or she must personally atone for the sin by "hav their blood spilt upon the ground, that the smoke thereof might ascend to heaven as an offering for their sins" . Blood atonement was supposed to be voluntarily practiced by the sinner, or it was contemplated as being mandatory in a theoretical theocracy which was planned for the Utah Territory, but it was supposed to be carried out with love and compassion for the sinner, not out of a desire for vengeance . The concept was first taught in the mid-1850s by the First Presidency of The Church of Jesus Christ of Latter-day Saints (LDS Church) during the Mormon Reformation, when Brigham Young governed the Utah Territory as a near-theocracy. Even though there was discussion about implementing the doctrine, there is no direct evidence that it was ever practiced by the Mormon leadership in their capacity as the leaders of both church and state . There is inconclusive evidence, however, to suggest that the doctrine was independently enforced a few times by Mormon individuals . Scholars have also argued that the doctrine contributed to a culture of violence, which, combined with paranoia that resulted from the church's long history of being persecuted, incited over a hundred extrajudicial killings by Mormons, including the Mountain Meadows Massacre .