Isn't that a town in Idaho? I thought this incident happened in Oregon.
I live in San Diego, a very diverse town. I'm going to make a racist claim, only because I haven't met EVERY minority in town: The most overt racism I see is from minorities. Even I know not to bring up skin color or race, but Heysus, so many blacks and Hispanics will tell me to my face that I'm racist just because I am white. It is literally prejudice.
So, it may take some more of the OP things, encouraged by the black power movement, to see that minorities are just as prejudiced as whites, and lets all knock off the overt racism. Like religion and Vegetarianism, keep your racism to yourself. It's the law.