Is slavery the only thing that comprises racism?
No! Did I imply that? Absolutely not. Why is the media picking on the Mormons and singling them out? Could it be their support of Proposition 8 in California? Compared to the lots of other Christian sects and denominations, they have a much better record. Unlike most of the other groups in the US, they got along rather well with the local American Indian tribes and made alliances with them. Lots of other Christians in the US either wanted to push Indians off of every acre of good land or to exterminate them. Many Christian missionaries who didn't want to kill the Indians still wanted to wipe out their entire culture in missionary schools where children only learned about European and European dervied American culture.
Racism also includes segregation—both in religious and government institutions. You can read about it here among the mainstream Christian churches:
Again, how is the beam?