I answered hard to tell. But obviously many past posts have been cringe-worthy - and hopefully were quickly deleted. That these posts weren't immediately shut down/deleted is evidence that its more than a few loudmouths. (We should do a better job of policing our own.) Its hard to generalize the entire board as having "racist tendencies", based on posts from a few loudmouths. And today's definition of racism is frankly so thin-skinned its to the point that nearly anything can be deemed racist. Sometimes we say insensitive things. Rarely intentional. Probably a result of how sheltered and provincial many Mormons and BYU fans are.
But people are blind if they answer no. Anyone who's read the board for the last 6 months couldn't in good conscience say either "Yes", "Hard to tell", or "A few loudmouths" aren't all true.