Blacks are the most racist ethnic group out there. They will never admit, of course. There would be all kinds of protests/riots if a bunch of white students pulled a day without blacks stunt.
It is in there, I just didn't want to start that conversation. Don't remember where the verse is or what it says exactly without looking it up. It says something to the effect of "speaking in tongues as the spirit of God gave them the utterance." I don't know a lot about the LDS, but maybe they don't use the King James version.