I was watching the same thing as you guys, but it's not as simple as you are making it out to be. All of the witnesses have conflicting stories; all of them. The only one the has been somewhat consistent is that of Officer Wilson, who had the most to lose in the situation. That's all I'm saying. We will NEVER really know what happened. Ever.
So based on the evidence that was presented to the grand jury they chose not to indict, and if I had been in the same situation I would have voted for the same thing. The grand jury made the right decision, but that doesn't mean I or the people of color around America have to like it. That's where you are getting confused: you think because I am sympathetic that I think the grand jury got it wrong; I don't.