I find nothing that says "Kill all the Christians and Jews" in their teachings.
THE BOOK OF JACOB
THE BROTHER OF NEPHICHAPTER 224 Behold, David and Solomon truly had many wives and concubines, which thing was abominable before me, saith the Lord.
25 Wherefore, thus saith the Lord, I have led this people forth out of the land of Jerusalem, by the power of mine arm, that I might raise up unto me a righteous branch from the fruit of the loins of Joseph.
26 Wherefore, I the Lord God will not suffer that this people shall do like unto them of old.
27 Wherefore, my brethren, hear me, and hearken to the word of the Lord: For there shall not any man among you have save it be one wife; and concubines he shall have none;
28 For I, the Lord God, delight in the chastity of women. And whoredoms are an abomination before me; thus saith the Lord of Hosts.
29 Wherefore, this people shall keep my commandments, saith the Lord of Hosts, or cursed be the land for their sakes.
30 For if I will, saith the Lord of Hosts, raise up seed unto me, I will command my people; otherwise they shall hearken unto these things.
31 For behold, I, the Lord, have seen the sorrow, and heard the mourning of the daughters of my people in the land of Jerusalem, yea, and in all the lands of my people, because of the wickedness and abominations of their husbands.
32 And I will not suffer, saith the Lord of Hosts, that the cries of the fair daughters of this people, which I have led out of the land of Jerusalem, shall come up unto me against the men of my people, saith the Lord of Hosts.
Or even HERE:
1 Timothy 3:2-3
2. Now the overseer must be above reproach, the husband of but one wife, temperate, self-controlled, respectable, hospitable, able to teach,
3. not given to drunkenness, not violent but gentle, not quarrelsome, not a lover of money.1 Timothy 3:12
A deacon must be the husband of but one wife and must manage his children and his household well.Titus 1:6
An elder must be blameless, the husband of but one wife, a man whose children believe and are not open to the charge of being wild and disobedient.
THE
DOCTRINE AND COVENANTS
OF THE CHURCH OF JESUS CHRIST OF LATTER-DAY SAINTSSECTION 13251–57, Emma Smith is counseled (commanded) to be faithful and true; 58–66, Laws governing the plurality of wives are set forth.51 Verily, I say unto you: A commandment I give unto mine handmaid, Emma Smith, your wife, whom I have given unto you, that she stay herself and partake not of that which I commanded you to offer unto her; for I did it, saith the Lord, to aprove you all, as I did Abraham, and that I might require an offering at your hand, by covenant and sacrifice.52 And let mine handmaid, Emma Smith, areceive all those that have been given unto my servant Joseph, and who are virtuous and pure before me; and those who are not pure, and have said they were pure, shall be destroyed, saith the Lord God.53 For I am the Lord thy God, and ye shall obey my voice; and I give unto my servant Joseph that he shall be made ruler over many things; for he hath been afaithful over a few things, and from henceforth I will strengthen him.55 But if she will not abide this commandment, then shall my servant Joseph do all things for her, even as he hath said; and I will bless him and multiply him and give unto him an ahundredfold in this world, of fathers and mothers, brothers and sisters, houses and lands, wives and children, and crowns of beternal lives in the eternal worlds.
The Nephites gather to the land of Cumorah for the final battles—Mormon hides the sacred records in the hill Cumorah—The Lamanites are victorious, and the Nephite nation is destroyed—Hundreds of thousands are slain with the sword. About A.D. 385.
1 And now I finish my record concerning the destruction of my people, the Nephites. And it came to pass that we did march forth before the Lamanites.
2 And I, Mormon, wrote an epistle unto the king of the Lamanites, and desired of him that he would grant unto us that we might gather together our people unto the land of Cumorah, by a hill which was called Cumorah, and there we could give them battle.
3 And it came to pass that the king of the Lamanites did grant unto me the thing which I desired.
4 And it came to pass that we did march forth to the land of Cumorah, and we did pitch our tents around about the hill Cumorah; and it was in a land of many waters, rivers, and fountains; and here we had hope to gain advantage over the Lamanites.
5 And *when three hundred and eighty and four years had passed away, we had gathered in all the remainder of our people unto the land of Cumorah.
6 And it came to pass that when we had gathered in all our people in one to the land of Cumorah, behold I, Mormon, began to be old; and knowing it to be the last struggle of my people, and having been commanded of the Lord that I should not suffer the records which had been handed down by our fathers, which were sacred, to fall into the hands of the Lamanites, (for the Lamanites would destroy them) therefore I made this record out of the plates of Nephi, and hid up in the hill Cumorah all the records which had been entrusted to me by the hand of the Lord, save it were these few plates which I gave unto my son Moroni.
7 And it came to pass that my people, with their wives and their children, did now behold the armies of the Lamanites marching towards them; and with that awful fear of death which fills the breasts of all the wicked, did they await to receive them.
8 And it came to pass that they came to battle against us, and every soul was filled with terror because of the greatness of their numbers.
9 And it came to pass that they did fall upon my people with the sword, and with the bow, and with the arrow, and with the ax, and with all manner of weapons of war.
10 And it came to pass that my men were hewn down, yea, even my ten thousand who were with me, and I fell wounded in the midst; and they passed by me that they did not put an end to my life.
11And when they had gone through and hewn down all my people save it were twenty and four of us, (among whom was my son Moroni) and we having survived the dead of our people, did behold on the morrow, when the Lamanites had returned unto their camps, from the top of the hill Cumorah, the ten thousand of my people who were hewn down, being led in the front by me.
12 And we also beheld the ten thousand of my people who were led by my son Moroni.
13 And behold, the ten thousand of Gidgiddonah had fallen, and he also in the midst.
14 And Lamah had fallen with his ten thousand; and Gilgal had fallen with his ten thousand; and Limhah had fallen with his ten thousand; and Jeneum had fallen with his ten thousand; and Cumenihah, and Moronihah, and Antionum, and Shiblom, and Shem, and Josh, had fallen with their ten thousand each.
15 And it came to pass that there were ten more who did fall by the sword, with their ten thousand each; yea, even all my people, save it were those twenty and four who were with me, and also a few who had escaped into the south countries, and a few who had deserted over unto the Lamanites, had fallen; and their flesh, and bones, and blood lay upon the face of the earth, being left by the hands of those who slew them to molder upon the land, and to crumble and to return to their mother earth.
16 And my soul was rent with anguish, because of the slain of my people, and I cried:
17 O ye fair ones, how could ye have departed from the ways of the Lord! O ye fair ones, how could ye have rejected that Jesus, who stood with open arms to receive you!
18 Behold, if ye had not done this, ye would not have fallen. But behold, ye are fallen, and I mourn your loss.
19 O ye fair sons and daughters, ye fathers and mothers, ye husbands and wives, ye fair ones, how is it that ye could have fallen!
20 But behold, ye are gone, and my sorrows cannot bring your return.
21 And the day soon cometh that your mortal must put on immortality, and these bodies which are now moldering in corruption must soon become incorruptible bodies; and then ye must stand before the judgment-seat of Christ, to be judged according to your works; and if it so be that ye are righteous, then are ye blessed with your fathers who have gone before you.
22 O that ye had repented before this great destruction had come upon you. But behold, ye are gone, and the Father, yea, the Eternal Father of heaven, knoweth your state; and he doeth with you according to his justice and mercy.
Indeed it has!
But WHY?
If, as MORMONism claims, it is the RESTORED christianity that disappeared from the earth; and Joseph Smith finally delivered it to the world CORRECTLY; why change ANYTHING?
There are scholarly books on the matter that anyone can read. Look up "mormon charity during great depression" in Google.
I suppose someone might argue these ideas were grounded in the Book of Mormon, but non-Mormon researchers attribute the stimulus to extreme privation, destitution, starvation ~ the usual disasters that happened so regularly under Roosevelt's regime.