I believe that “I am the Lord, I change not”. The issue I have is that there always seem to be many excuses justifying why we don’t know the Lord’s heart is in the first place and then receive “revelation” to make the change to what we now accept as correct. Correct is correct whether it be now, later, before…..”I change not”.
I wouldn’t join anything, nor would most people, that treats me as lesser than others in God’s eye’s. If we are all accepted by God as equals with each other then I would suggest that the original “revelation” would have been explicit enough to share God’s heart in that and African American men would not have been excluded. I contend that “man” chose that to be the way it was, as in slave days, and there was no “revelation” needed, just understanding of God and his purpose. I think this would lend itself to wanting to join for other reasons (pressure, fear, needing to belong, whatever). There were other organizations joined as well so maybe being part of something instead of being persecuted? Joining can’t be used as a validation for only your organization. People join gangs to feel part of something, even if they aren’t going to be the top dog so that’s not a great argument.

As in the LDS church, the world in general including us “born-agains” (as my LDS friend calls us:) have come into “understanding” of certain things as we move along this life and press into God and learn more about him and his character, both collectively and individually. What is interesting is that it isn’t really “divine” revelation in many of these instances just common sense and understanding of God. I dislike the fact that it is sold as one man getting “divine revelation”. 

We ALL are guilty of misunderstanding things (at different points in our life) or even purposely doing what we thought was right due to politics, selfishness or whatever (as in slavery or not allowing them to hold the priesthood) and it took us understanding (revelation of) God’s grace and forgiveness through the Savior that brought us the change (as it is in the Bible already on how to treat people), not one man’s “divine revelation” unless he/they needed it due to not “getting it” from the Word (Bible and that was here in flesh) and leading of the Holy Spirit.

The whole thing is unfortunate but men have been failing miserably for centuries which is why we need a Savior. We, however, have the choice to accept, study and “press on toward the mark” as it says in Philippians.

And from brother Brigham:

“Shall I tell you the law of God in regard to the African race? If the white man who belongs to the chosen seed mixes his blood with the seed of Cain, the penalty, under the law of God, is death on the spot. This will always be so.” (Journal of Discourses, Vol.10, p.109)

Here is one you missed:
2 Nephi 26:33 “For none of these iniquities come of the Lord; for he doeth that which is good among the children of men; and he doeth nothing save it be plain unto the children of men; and he inviteth them all to come unto him and partake of his goodness; and he denieth none that come unto him, black and white, bond and free, male and female; and he remembereth the heathen; and all are alike unto God, both Jew and Gentile.”

Please read more at the FAIR wiki.

2 Nephi 5:21 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.

2 Nephi 30:6 And then shall they rejoice; for they shall know that it is a blessing unto them from the hand of God; and their scales of darkness shall begin to fall from their eyes; and many generations shall not pass away among them, save they shall be a pure white (1830 edition) and a delightsome people.

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.

Alma 3:6 And the skins of the Lamanites were dark, according to the mark which was set upon their fathers, which was a curse upon them because of their transgression and their rebellion against their brethren, who consisted of Nephi, Jacob, and Joseph, and Sam, who were just and holy men.

3 Nephi 2:15 And their curse was taken from them, and their skin became white like unto the Nephites.

Mormon 5:15 And also that the seed of this people may more fully believe his gospel, which shall go forth unto them from the Gentiles; for this people shall be scattered, and shall become a dark, a filthy, and a loathsome people, beyond the description of that which ever hath been amongst us, yea, even that which hath been among the Lamanites, and this because of their unbelief and idolatry.

And from brother Brigham:

“Shall I tell you the law of God in regard to the African race? If the white man who belongs to the chosen seed mixes his blood with the seed of Cain, the penalty, under the law of God, is death on the spot. This will always be so.” (Journal of Discourses, Vol.10, p.109)