Is there any truth to this claim?

"The basic element of your ideas and concepts seems to be that all God's children stand in equal positions before Him in all things. Your knowledge of the Gospel will indicate to you that this is contrary to the very fundamentals of God's dealings with Israel dating from the time of His promise to Abraham regarding Abraham's seed and their position vis-a-vis God Himself. Indeed, some of God's children were assigned to superior positions before the world was formed.

Ethiopian Jews protest racism and police brutality

But how are those Black Jews treated?

Is this a sign of racial progress or not?

In the above scripture from Abraham, then, we have a reliable account of the early genealogy of the Negro race, and in Abraham's comments we have further evidence of the divine direction in the LDS Church policy of not allowing the Negro, the seed of Cain and Ham to bear the Priesthood. (pg 45)

Brigham Young, Journal of Discourses, Volume 10, page 110.

There are Negroes born into families of wealth and refinement, others who are blessed with great talents, and there are those born into the lowest classes of society in Africa, in squalor and ignorance, living out their lives in a fashion akin to that of the animals. Does not this infinite variety of circumstance give further evidence of man's being assigned that station in life which he has merited by his performance in the pre-mortal existence? (pg 44)

Mormon Doctrine, 1966, pp. 527-528.

"We feel very sure that you are aware of the doctrines of the Church. They are either true or not true. Our testimony is that they are true. Under these circumstances we may not permit ourselves to be too much impressed by the reasonings of men, however well founded they may seem to be. We should like to say this to you in all sincerity, that you are too fine a man to permit yourself to be led off from the principles of the Gospel by worldly learning.

The negro is an unfortunate man. He has been given a black skin.

Lowry followed up with another letter to the First Presidency, dated 8 October 1947, in which he expressed his disappointment with the Mormon Church's officially, blatantly racist position, expressing his conclusions as follows:

COMPASS: What was the reason for that?

(John J. Stewart, Mormonism and the Negro," [Orem, Utah: Community Press, 1960], pp. 46-47 (see below for link); see also, (archived copy) and )

Journal of Discourses, . (PDF file)

There is nothing in the doctrines of the Church of Jesus Christ of Latter-day Saints about which any member need feel any shame, apology or embarrassment. Perhaps in the individual failings and weaknesses of some who profess to be members, there may be cause, but not in the Gospel itself.
As the Apostle Paul said, "For I am not ashamed of the gospel of Christ-, for it is the power of God unto salvation to every one that believeth..."
Yet, because of the popular beliefs and traditions of the world, there are at least two points of doctrine and history of this Church about which many LDS themselves—to say nothing of many non-members—feel ill at ease or critical. One of these is its doctrine regarding the Negro.
If we properly understood this doctrine, and the reasons for it, we would not feel critical of it. "And ye shall know the truth" taught Jesus, "and the truth shall make you free." We would become free of any misgivings about these teachings, and readily proclaim to the world what they are, and why.

Look magazine, October 22, 1963, page 79.

Indeed, some of God's children were assigned to superior positions before the world was formed. We are aware that some Higher Critics do not accept this, but the Church does. (pg 46)

The Way to Perfection, page 43.

The book, Mormonism and the Negro, was written by John J. Stewart and published in 1960. The book can be. Although it was not officially produced by the church, it was the definitive work work of the time to counter the growing Civil Rights Movement. It was important enough that the December 1965 issue of "The Improvement Era: The Voice of the Church; Official organ of the Priesthood Quorums, Mutual Improvement Associations, Home Teaching, Music Committee, Department of Education, and other agencies of The Church of Jesus Christ of Latter-day Saints" allowed it to be advertised as the free book for the LDS Book of the Month Club, which had this to say about the book: