My dear fellow white science-fiction fans, let me use an analogy to try to explain one reason why people are so angry about what’s happening in Ferguson.
If you only watch one episode of Star Trek (original series), the fact that a guy in a red shirt dies is tragic, but eh— that’s television. But when you watch the entire series, you realize that a disproportionately high percentage of people wearing red shirts die.
It’s not that Captain Kirk has it out for people in red shirts. Heck, one of his best friends wears a red shirt. And Scotty never gets killed, so clearly not all red shirts die. And bad things happen to Kirk, too. But still— when you start paying attention, it’s pretty clear that wearing a red shirt in Star Trek is a death sentence.
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Perhaps this will let you understand better.
It’s not just this case. It’s just that the cases never stop happening.