Here some quotes:
Bruce R. McConkie:
Negroes in this life are denied the priesthood; under no circumstances can they hold this delegation of authority from the Almighty. The gospel message of salvation is not carried affirmatively to them.... Negroes are not equal with other races where the receipt of certain spiritual blessings are concerned ... (Mormon Doctrine, 1958, p.477).
Mark E. Peterson:
"When he told Enoch not to preach the gospel to the descendants of Cain who were black, the Lord engaged in segregation" (Race Problems as They Affect the Church, Address by Mark E. Petersen, August 27, 1954).
Evning & Morning Star (July, 16, 1833):
"Having learned with extreme regret, that an article entitled, 'Free People of Color,' in the last number of the Star, has been misunderstood, we feel in duty bound to state, in this Extra, that our intention was not only to stop free people of color from emigrating to this state, but to prevent them from being admitted as members of the Church" (Reprinted in History of the Church, vol. 1, pp.378-79).
Brigham Young:
"You must not think, from what I say, that I am opposed to slavery. No! The negro is damned, and is to serve his master till God chooses to remove the curse of Ham..." (New York Herald, May 4, 1855, as cited in Dialogue, Spring 1973, p.56).
John Lund, writer, LDS:
Brigham Young made a very strong statement on this matter when he said, "... 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." God has commanded Israel not to intermarry. To go against this commandment of God would be to sin. Those who willfully sin with their eyes open to this wrong will not be surprised to find that they will be separated from the presence of God in the world to come. This is spiritual death.... It does not matter if they are one-sixth Negro or one-one hundred and sixth, the curse of no Priesthood is still the same.... To intermarry with a Negro is to forfeit a "Nation of Priesthood holders" (The Church and the Negro, 1967, pp.54-55).
These words are louder than your try to support your church in this case.