The reason I still talk about stuff like this is simple. The reason we have riots and idiots inciting riots is because many people refuse to think clearly and instead depend on their "gut feeling" about what they think happened.
The notion of "obvious racism" will never go away along as the baiters continue to depend on people reacting without a clear thought proces.
Our system of justice depends on rationality, not emotion (that, despite the fact that emotion is used in the process of a trial or decision). The Race Industry depends on emotion for its continued health, therefore there is a vested interest by those involved to remove as much reason as possible and inject as much emotion as possible.
BL and others want a conviction, not for justice, but so they can feel better. (Now I'm engaging in speculation, based on the comments I've read).
But ultimately, it's not about how we should feel about this, but about what is right - to the best ability we can get there as a society.