I agree, actually. It matters not a bit. Let's allow the facts and an investigation to be known before we all go rioting in the streets.
This is the same kind of stuff that happens when a cop shoots a dog in a fenced-in back yard. "It will take us a month or longer to get all the facts."
The facts are known. What most often happens is the PD has to spend some time getting its story straight to put the officer in the best possible light.
If the facts won't permit that, they can always resort to "he was in fear for his life."
Will that work in this case? Don't know, but, given the way the Ferguson PD has conducted itself over the past week, I think that's exactly what we're going to hear.
Remember, the top priority of police work is to make sure the officer goes home to his family at night.