“By what means did [God] keep the mob from destroying us? It was by means of being well armed with the weapons of death to send them to hell cross lots. Just so you have got to do. As for this people fostering to themselves that the day has come for them to sell their guns and ammunition to their enemies, and sit down to sleep in peace, they will find themselves deceived, and before they know, they will sleep until they are slain… We must be so prepared that they dare not come to us in a hostile manner without being assured they will meet a vigorous resistance, and ten to one they will meet their grave. … Let this people here lie down to sleep, and be entirely off their watch, and the first thing they know, they are in the greatest danger. You must not desert the watch tower, but do as I do—keep some person awake in your house all night long, and be ready, at the least tap of the foot, to offer a stout resistance, if it is required. Be rely at any moment to kill twenty of your enemies at least. Let every house be a fort. … I am my own policeman, and have slept, scores of nights, with my gun and sword by my side, that is, if I slept at all. I am still a policeman. Now is the day to watch. It is as important for me to watch now, as well as pray, as it ever has been since I came into this kingdom. It requires watching, as well as praying men; take turns at it, let some watch while others pray, and then change round, but never let any time pass without a watcher, lest you be overtaken in an hour when you think not; it will come as a thief in the night. Look out for your enemies, for we know not how they will come, and what enemy it will be. Take care of yourselves. … Take care of your grain, and take care of yourselves, that no enemy come to slay you. Be always on hand to meet them with death, and send them to hell, if they come to you. May God bless you all. Amen.”

Brigham Young -JD 1:171-172

“It is also for your salvation to equip yourselves. … Now, I will tell you, I have about a hundred shots on hand all the time,—three or four fifteen-shooters, and. three or four revolvers, right in the room where I sleep; and the Devil does not like to sleep there, for he is afraid they will go off half-cocked. If you will lay a bowie knife or a loaded revolver under your pillow every night, you will not have many unpleasant dreams, nor be troubled with the nightmare; for there is nothing that the Devil is so much afraid of as a weapon of death. … Let us be ready, guns cocked; none of your half-cocked.”

Heber C. Kimball -JD 5:164-165

There is one principle which is eternal; it is the duty of all men to protect their lives and the lives of the household, whenever necessity requires, and no power has the right to forbid it, should the last extreme arrive, but I anticipate no such extreme, but caution is the parent of safety.

As bearers of the priesthood, we have been placed on earth in troubled times. We live in a complex world with currents of conflict everywhere to be found. Political machinations ruin the stability of nations, despots grasp for power, and segments of society seem forever downtrodden, deprived of opportunity, and left with a feeling of failure.

"We who have been ordained to the priesthood of God can make a difference. When we qualify for the help of the Lord, we can build boys, we can mend men, we can accomplish miracles in His holy service. Our opportunities are without limit.

"Ours is the task to be fitting examples. We are strengthened by the truth that the greatest force in the world today is the power of God as it works through man. If we are on the Lord’s errand, brethren, we are entitled to the Lord’s help. Never forget that truth. That divine help, of course, is predicated upon our worthiness. Each must ask: Are my hands clean? Is my heart pure? Am I a worthy servant of the Lord?"

“Throughout history, disarming the populace has always preceded tyrants’ accession of power. Hitler, Stalin, and Mao all disarmed their citizens prior to installing their murderous regimes. At the beginning of our own nation’s revolution, one of the first moves made by the British government was an attempt to disarm our citizens. When our Founding Fathers ensured that the Second Amendment was made a part of our Constitution, they were not just wasting ink. They were acting to ensure our present security was never forcibly endangered by tyrants, foreign or domestic.”

Our government with its liberty and free institutions will not long survive a government trained and supervised youth. Such a youth can be a revolutionary machine. The ravening wolves are amongst us, from our own membership, and they, more than any others, are clothed in sheep’s clothing because they wear the habiliments of the priesthood…we should be careful of them.

J. Reuben Clark [Church News 6/15 1940]

"I wish to say with all the earnestness I possess that when you see any curtailment of these liberties I have named, when you see government invading any of these realms of freedom which we have under our Constitution, you will know that they are putting shackles on your liberty, and that tyranny is creeping upon you, no matter who curtails these liberties or who invades these realms, and no matter what the reason and excuse therefore may be.

"I say to you that the price of liberty is and always has been blood, human blood, and if our liberties are lost, we shall never regain them except at the price of blood. They must not be lost.” [The Improvement Era, 43, [July 1940] 444.]

And the scary part...
"I say unto you with all the soberness I can, that we stand in danger of losing our liberties, and that once lost, only blood will bring them back; and we of this church will, in order to keep the Church going forward, have more sacrifices to make, and more persecutions to endure than we have yet known. If the conspiracy comes here it will probably come in its full vigor and there will be a lot of vacant places among those who guide and direct, not only this government, but also this Church of ours."
J. Reuben Clark [CR Apr 1944 & 1952]

"This earth-wide conflict has taken the form of seizing without compensation from the man who has, and giving to the man who has not; of taking from the worker the fruits of his work, and giving to the idler who does not work. It has from its very nature become an economic, uncompensated leveling downward, not upwards of the whole mass. That this result may in one country be reached by confiscatory taxation, and in another by direct seizure, is a mere matter of method. The results is the same. In some countries outright seizure and confiscation are already openly and shamelessly practiced. All is done in the name of the state, as if it were deity – as if the state, not God gives all. Even into the field of family relationship, which, next to man’s relationship to God, is the most precious and dearest of all relationships, this modern State is thrusting its polluting hand. In some lands this new State is robbing the parents of custody of their children, it is forbidding the parents to teach and admonish the children in the ways of righteous living; it is teaching the children that officers of State, not God, shall be looked to for a guide as to standards of life! Into the field of religion, the holy of holies of the soul of man, this modern world State also enters, to dethrone God and exalt the State into God’s place. This is the archest reason of them all! For man robbed of God becomes a brute. This sin must be felt, not told, for words cannot measure the height and breadth of this iniquity; nor can human mind encompass the punishment of those who shall commit this sin." [1938 Vital Speeches]

"Some things are changeless—priceless. We must anchor ourselves to the eternal verities of life, for life is   eternal. The honors of men more often than not are fleeting. Anxious to run after the honors of office or succumb to the pressures of public glamour and worldly acclaim, some of us are no longer willing to stand up for all the principles of the gospel. We seek to justify our unrighteousness by claiming that if only we can get title or position, then think of the good we can do. Hence we lose our salvation en route to those honors. We sometimes look among our numbers to find one to whom we can point who agrees with us, so we can have company to justify our apostasy."

Excellent Talk  http://scriptures.byu.edu/gettalk.php?ID=1361

Second Great Rebellion or Chicago Quote - A. Milton Musser papers, LDS Church Archives.This was a letter from Nephi Packard to A. Milton Musser on July 24, 1896:

"... My brother, Noah Packard, says that he heard the Prophet Joseph say that the next great (U.S. civil) war after the war of the rebellion (the Civil War of the 1860's between the North and the South) would commence in a little town now called Chicago but at that time it would have grown to be a very large city. And another brother told me that the Prophet said that the cause of the next great trouble of the United States would be the depreciation of the currency of the United States. I believe I have given you all the facts in as short and concise manner as possible."

Another quote regarding the Civil War itself comes from an interview by Dr. Poulson with David Whitmer, printed in the Deseret News on Friday, August 16, 1878:

Question: When will the temple be built in Independence?

Answer: Right after the great tribulation is over

Question: What do you mean by that?

Answer: A civil war more bloody and cruel than the rebellion. It will be the smashing up of this nation, about which time the second great work has to be done, a work like Joseph did, and the translation of the sealed plates and peace all over.