Utah has the lowest percentage of black people of virtually anywhere in the country. That includes Alaska. Milwaukee has a large black community, Portland has its historical issues with racism but they are also currently the epicenter of social awareness/progressivism.People outside of Utah view Utah as weird. Not "they're all just racist," but strange or peculiar. Mormonism is a strong reason for it. People out of the state view it as a cult and regressive. There are some other NBA markets that are whiter than Utah (I think Portland and maybe Milwaukee), but people outside of Utah see it as a weird state run by a religious organization that is seen as a cult. I'm not sayin it's right, but it's the reality. I've been to Utah a few times and found the people and the state very nice, but yeah this is the perception of Utah from people outside of the state. Because of this, when there is an incident at a Jazz game, it blows up because it confirms peoples's biases about the state.
That being said, Utah has diversity in some other ways, but the power structure here is truly and obviously centered around the church and straight white men. Utah is certainly a unique place. Aspects of that make me love it and aspects of that really don’t.