[quote=Brovo]
--The head shots were likely execution moves. (Officers should aim not to kill, but disable. The order to kill is only if their life is directly threatened and Brown held no ranged weapon on his person. Combined with the lack of residue this is indicative of either ridiculous incompetence or insane callousness.)
[/quote]

I have to disagree here, on three points. First, speculation on an event is not a fact. 

Second, the residue. Residue is only deposited at very close range(sub 1.5/2 feet) directly in front of the muzzle. The range group is so wide as to make the lack of residue only an indicator that the gun was not right next to Brown when he was killed(And also further serves to illustrate that there was likely a struggle for the weapon in the car considering the gun could not have been pointed at Brown when it went off.)

Finally, in a self defense scenario, with adrenaline pumping(and also having just been hit in the head), the line of thought is not, "Alright, he is running at me, I will now aim for the legs, alright, pulling trigger now, bam, bam, that'll stop him." It is much closer to, "Shit! I am now shooting! He's still coming, shoot shoot shoot! Alright he's down." Aiming a handgun to put multiple rounds quickly and accurately on target is somewhat difficult, and is made no easier by the conditions the officer was placed in during the event.

I do, however, agree cessation of rioting and protesting, and an increase in co-operation is going to be necessary to help this situation be resolved.