Define "defamed" - doctrine matters and it is ludricris to believe that mormons and the rest of Christianity can all be called "Christians" when -
Mormonism is polytheistic - Christianity is monotheistic
Mormon Jesus is a created being ontologically equal to satan as well as you and I - Christianity Jesus is the Second Person of the Trinity, eternal God, not created
And these are just two of the key doctrinal differences. It is NOT defamation to draw the line in the sand.
In the premortal existence, Heavenly Father prepared a plan to enable us to become like Him and receive a fulness of joy. The scriptures refer to this plan as "the plan of salvation" (Alma 24:14; Moses 6:62), "the great plan of happiness" (Alma 42:8), "the plan of redemption" (Jacob 6:8; Alma 12:30), and "the plan of mercy" (Alma 42:15). The plan of salvation is the fulness of the gospel.
It includes the Creation, the Fall, the Atonement of Jesus Christ, and all the laws, ordinances, and doctrines of the gospel. Moral agency, the ability to choose and act for ourselves, is also essential in Heavenly Father's plan. Because of this plan, we can be perfected through the Atonement, receive a fulness of joy, and live forever in the presence of God. Our family relationships can last throughout the eternities.
Note: No mention of the Crucifixion.
Amen!
2 Corinthians 11:12
And I will keep on doing what I am doing in order to cut the ground from under those who want an opportunity to be considered equal with us in the things they boast about.