Mormons believe that dark skin is a curse and that only the whitest people can reach the highest level of heaven. Here are some selected scriptures and doctrines. The LDS Church is the most based thing that I've ever seen Think about things from a pragmatist point of view and check out the church.
1 Nephi 13
[15] And I beheld the Spirit of the Lord, that it was upon the Gentiles, and they did prosper and obtain the land for their inheritance; and I beheld that they were white, and exceedingly fair and beautiful, like unto my people before they were slain.
2 Nephi 5
[21] And he had caused the cursing to come upon them, yea, even a sore cursing, because of their iniquity. For behold, they had hardened their hearts against him, that they had become like unto a flint; wherefore, as they were white, and exceedingly fair and delightsome, that they might not be enticing unto my people the Lord God did cause a skin of blackness to come upon them.
Jacob 3
[8] O my brethren, I fear that unless ye shall repent of your sins that their skins will be whiter than yours, when ye shall be brought with them before the throne of God.
3 Nephi 2
[15] And their curse was taken from them, and their skin became white like unto the Nephites;
3 Nephi 19
[25] And it came to pass that Jesus blessed them as they did pray unto him; and his countenance did smile upon them, and the light of his countenance did shine upon them, and behold they were as white as the countenance and also the garments of Jesus; and behold the whiteness thereof did exceed all the whiteness, yea, even there could be nothing upon earth so white as the whiteness thereof.
[30] And when Jesus had spoken these words he came again unto his disciples; and behold they did pray steadfastly, without ceasing, unto him; and he did smile upon them again; and behold they were white, even as Jesus.
Mormon 9
[6] O then ye unbelieving, turn ye unto the Lord; cry mightily unto the Father in the name of Jesus, that perhaps ye may be found spotless, pure, fair, and white, having been cleansed by the blood of the Lamb, at that great and last day.
Pearl of Great Price,
For behold, the Lord shall curse the land with much heat, and the bareness thereof shall go forth forever; and there was a blackness came upon all the children of Canaan, that they were despised among all people.
Prophet Joseph Smith,
Question Thirteenth. 'Are the Mormons abolitionists?' No, unless delivering the people from priestcraft, and the priests from the power of Satan, should be considered abolition. But we do not believe in setting the negroes free.