Scriptures on -isms

3 Nephi 6-The church was all split up and broken because of the great differences in the people.  Basically this,

"15 Now the cause of this iniquity of the people was this—Satan had great power, unto the stirring up of the people to do all manner of iniquity, and to the puffing them up with pride, tempting them to seek for power, and authority, and riches, and the vain things of the world."

 Jacob 2-Seek for riches before ye seek for the kingdom.   Puffed up and prideful people.  

D & C 38-"For what man among you having twelve sons, and is no respecter of them, and they serve him obediently, and he saith unto the one: Be thou clothed in robes and sit thou here; and to the other: Be thou clothed in rags and sit thou there—and looketh upon his sons and saith I am a just?"

Gordon B. Hinckley, The Need for Greater Kindness, Ensign, May 2006
Overall, President Hinckley testifies that when the blacks got the priesthood he was in the temple and he knew it was from God.  

M. Russell Ballard, Doctrine of Inclusion, Ensign, November 2001
"Surely good neighbors should put forth every effort to understand each other and to be kind to one another regardless of religion, nationality, race, or culture..."  Essentially, don't exclude others and don't teach your children to exclude others.

He quotes Pres. Hinckley, “Each of us is an individual. Each of us is different. There must be respect for those differences. ... We must work harder to build mutual respect, an attitude of forbearance, with tolerance one for another regardless of the doctrines and philosophies which we may espouse. Concerning these you and I may disagree. But we can do so with respect and  civility” (Teachings of Gordon B. Hinckley [1997], 661, 665).

"Of all people on this earth, we should be the most loving, the kindest, and the most tolerant because of that doctrine."--Loved this!