Fred Karger states that Latter-day Saints "didn't allow blacks in the Church until 1978." Although blacks were not allowed to hold the priesthood or enter temples between 1852 and 1978, they have been welcome as baptized and participating members since the Church's formation in 1830.
The narrator claims that Latter-day Saints believe God was once a human being and that after he died he "became a god where he began marrying spirit wives and having spirit offspring" and that "we, too, can become gods on our own planets, filled with our own spirit wives and children." In reality, they believe that marriage must be performed on Earth, not after death, and that women will be resurrected as well as men (hence no "spirit wives").
The film states "There was a meeting held by Church President Gordon Hinckley at his estate in Hawaii where one of the Catholic cardinals came out." President Hinckley never owned an estate in Hawaii or anywhere else.
The quote from President Monson has absolutely nothing to do with Proposition 8. It is taken from a General Conference talk given in April 2009. "I testify to you that our promised blessings are beyond measure. Though the storm clouds may gather, though the rains may pour down upon us, our knowledge of the gospel and our love of our Heavenly Father and of our Savior will comfort and sustain us and bring joy to our hearts as we walk uprightly and keep the commandments. There will be nothing in this world that can defeat us." Thomas S. Monson, April 2009, "Be of Good Cheer" The talk, entitled "Be of Good Cheer", is about how life can be difficult but through faith one can find both peace in this life and eternal salvation through God. The talk has absolutely nothing to do with same-sex marriage or Proposition 8.