You make a very good point. I don't remember where I read it, but a couple of years ago a white guy was stopped by cops after leaving a store (a Walmart?). Someone had reported that the guy was carrying a gun. Different cops shouted different commands to the man. He followed one command, which meant he disobeyed another. And that got him shot. IIRC, he was killed. It sounds like you're talking about Erik Scott who was shot at a Henderson, NV Costco about 6 years ago. There were all kinds of investigations there but the cops got off.