We believe in being subject to kings, presidents, rulers, and magistrates, in obeying, honoring, and sustaining the law.
THE ARTICLES OF FAITH OF THE CHURCH OF JESUS CHRIST OF LATTER-DAY SAINTS
History of the Church, Vol. 4, pp. 535—541
LDS Church members and leaders who support the “Yes on 8” and “Protect Marriage” campaign believe that the magistrates (judges) on the California State Supreme Court were wrong, and are not honoring and sustaining the law as written in the California state constitution and interpreted by duly appointed and confirmed judges on the bench.
There is no reason to make this post longer: either you believe in being subject to the magistrates who were appointed to interpret the law of California, and honoring and sustaining that law, or you don’t. Clearly, the LDS Church believes that this article of faith only applies when the magistrates’ opinions and law of the land are consistent with Church doctrine. (Ironically, anti-polygamy laws were influential on the Church in the late 19th century, when the Church restricted its more expansive definition of marriage practices to become in line with the law of the land.)