In The Instructor David O. McKay teaches that, next to worshipping God, the most important thing is to be united in upholding and defending the U.S. Constitution.
David O. McKay, "Latter-day Saints and the Constitution," The Instructor 91, no. 2 (February 1956): 34
Latter-day Saints and the Constitution Latter-day Saints should have nothing to do with secret combinations and groups antagonistic to the constitutional law of the land, which the Lord ""suffered to be established,"" and which ""should be maintained for the rights and protection of all flesh, according to just and holy principles."" ""That every man may act in doctrine and principle pertaining to futurity, according to the moral agency which I have given unto him, that every man may be accountable for his own sins in the day of judgement. ""Therefore, it is not right that any man should be in bondage to another. ""And for this purpose have I established the Constitution of this land, by the hands of wise men whom I raised up unto this very purpose, and redeemed the land by the shedding of blood"" (Doctrine and Covenants 101:77-80.) Of course there are errors in government which some would correct: certainly there are manifest injustices and inequalities, and there will always be such in any government in the management of which enter the frailties of human nature. If you want changes go to the polls on election day, express yourself as an American citizen, and thank the Lord for the privilege that is yours to have a say as to who shall serve you in public office. Next to being one in worshiping God, there is nothing in this world upon which thus Church should be more united than in upholding and defending the Constitution of the United States!"