D&C 134

Herein we learn Church doctrine concerning governments.  I would like to note some important principles.

"WE believe that governments were instituted of God for the benefit of man; and that he holds men accountable for their acts in relation to them, both in making laws and administering them, for the good and safety of society."  (Doctrine and Covenants | Section 134:1)

"We believe that no government can exist in peace, except such laws are framed and held inviolate as will secure to each individual the free exercise of conscience, the right and control of property, and the protection of life."  (Doctrine and Covenants | Section 134:2)

"We believe that religion is instituted of God; and that men are amenable to him, and to him only, for the exercise of it, unless their religious opinions prompt them to infringe upon the rights and liberties of others; but we do not believe that human law has a right to interfere in prescribing rules of worship to bind the consciences of men, nor dictate forms for public or private devotion; that the civil magistrate should restrain crime, but never control conscience; should punish guilt, but never suppress the freedom of the soul."  (Doctrine and Covenants | Section 134:4)

"We believe that all men are bound to sustain and uphold the respective governments in which they reside, while protected in their inherent and inalienable rights by the laws of such governments; and that sedition and rebellion are unbecoming every citizen thus protected, and should be punished accordingly; and that all governments have a right to enact such laws as in their own judgments are best calculated to secure the public interest; at the same time, however, holding sacred the freedom of conscience."  (Doctrine and Covenants | Section 134:5)

"We do not believe it just to mingle religious influence with civil government, whereby one religious society is fostered and another proscribed in its spiritual privileges, and the individual rights of its members, as citizens, denied.
10 We believe that all religious societies have a right to deal with their members for disorderly conduct, according to the rules and regulations of such societies; provided that such dealings be for fellowship and good standing; but we do not believe that any religious society has authority to try men on the right of property or life, to take from them this world's goods, or to put them in jeopardy of either life or limb, or to inflict any physical punishment upon them. They can only excommunicate them from their society, and withdraw from them their fellowship.
11 We believe that men should appeal to the civil law for redress of all wrongs and grievances, where personal abuse is inflicted or the right of property or character infringed, where such laws exist as will protect the same; but we believe that all men are justified in defending themselves, their friends, and property, and the government, from the unlawful assaults and encroachments of all persons in times of exigency, where immediate appeal cannot be made to the laws, and relief afforded."  (Doctrine and Covenants | Section 134:9 - 11)

"We believe it just to preach the gospel to the nations of the earth, and warn the righteous to save themselves from the corruption of the world; but we do not believe it right to interfere with bond-servants, neither preach the gospel to, nor baptize them contrary to the will and wish of their masters, nor to meddle with or influence them in the least to cause them to be dissatisfied with their situations in this life, thereby jeopardizing the lives of men; such interference we believe to be unlawful and unjust, and dangerous to the peace of every government allowing human beings to be held in servitude."  (Doctrine and Covenants | Section 134:12)

This last verse was given before emancipation.  But it still holds true in other nations where this practice is permitted.