Scott: In ancient Israel, only the Levites, or priests after the order of Aaron, Moses brother, could participate and hold the priesthood, including entering parts of the Temple. The priesthood isn’t under the direction of Barrack Obama or any other human being that doesn’t hold the Keys of the Priesthood and Kingdom of God on the earth today. Therefore, the Priesthood isn’t a topic of equality. It has nothing to do with equality.
We simply do not have the answer of why black men could be baptized, receive the Holy Ghost but not the Priesthood. The speculation and theories were just that. But, to say President Kimball was a bigot racist until he received specific revelation, thus saith the Lord, is really false and very judgmental. Same goes for other past prophets and apostles.
I do want to clarify one thing I believe you said too. You said that the restriction of blacks in the Priesthood was doctrine at one time. No, it was not. It was a restriction or rule. Not doctrine. There is nothing in the Doctrine and Covenants or Pearl of Great Price stating blacks could not hold the Priesthood. Nor, is it in the Book of Mormon or the Bible. But, back to the LGBT thing, there are several verses in the Bible, both OT and NT, that state homosexual behavior and acts are sin and thus doctrinal.