They are laying the full weight of the case on the Grand Jury. This hopefully will prevent further riots when they come back with a no bill (silly as it sounds). I would like to see the ethnic composition of the jury.
The jury’s majority white. I read it about the way you do, the prosecution doesn’t want to be accused of leaving out or artificially emphasizing any aspect of the evidence. I think that wish would apply regardless of the GJ’s ultimate decision.