If being Mormon is just an excuse to be racist then is Christianity just an excuse to be arrogant?

Actually, you should be attacking the SBC (Southern Baptist Convention) folks. They're larger and they still have segregated churches. It took until 1995 for them to apologize for the racist approach to slavery.

(Added: In 1995, the Southern Baptist Convention voted to adopt a resolution renouncing its racist roots and apologizing for its past defense of slavery, segregation, and white supremacy.)

The Mormons were abolitionists, which is why they got kicked out of Missouri with a "shoot on site" order hanging over their heads.

The main LDS organization is no longer racist. It changed the wording to that infamous passage in their Mormon scripture.

Christianity a source of arrogance? No, we are constantly encouraged *not* to be arrogant, to renounce the world and follow Christ. Our examples are people like Jesus, Saint Francis, Saint Bernadette and Joan of Arc. Very rarely will you find an arrogant Saint.

Truth is mormons are not racist,

and few Christians are arrogant.

Do you get a kick out of insulting others?

Mormon=Christian.