On its own, it looks to me as if one cop went berserk for some reason of his own. It had nothing to do with the police department or Ferguson. Some people are trying to make it out to be white cops picking on black people but, if that were true, you would hear of stories from that area all the time and you don't. Yes, there are tensions between the police and some in the community but, be aware, Ferguson is not The Hamptons.
No one needed to die over this. The cop apparently went berserk. However, this was more than just some kid walking down the street. As minor as this sounds, people walking down the street, blocking traffic, is something of a major issue in Ferguson. People are always complaining about this in that area. It's a real problem. Perhaps this "If I told you once I told you a thousand times!" incident is what finally set him off but this was HIS problem, not that whole department's problem or anything to do with Ferguson.
What I'm trying to say is, the REAL story is "Cop gets fed up and goes berserk" not "White cops murdering black kids".
While the radio station did its best to confirm the ID of the caller, we don't know for sure she's real. However, her recounting of the events is similar to what was reported on TV and radio within hours of the original shooting. I own some restaurants and frequently get police visitors. I've been told that the real story will come out later and little of what's been told by those so-called "eyewitnesses" is true. Specifically, "witnesses" claim Brown was shot in the back as he was running away. We will soon learn that isn't true at all.
While I thought it sounded like a cop gone berserk at first, more and more bits and pieces are leaking out along with the link above and, if confirmed, will tell you something I won't go into here and now.