Ok, I'm guessing you didn't read the autopsy report, and your questions your asking are leading questions muir. Hardly productive to an unbiased discussion.
Hold on....
You just said he was fighting with the officer and that he struggled for the gun
But then you say he was charging the officer when he was shot...
So which is it?
The autopsy found gunshot residue in his injured thumb and blood on the gun. That can only happen if his thumb is near the gun when it was fired. After he got shot he started to run so the officer chased him, but then brown turned toward the officer. This can be determined because he was shot facing the officer and 30 feet from the car. That means he had to turn and run, then face the officer again. Then judging by the angle of the wound in his arm at this point, they can determine that his hands where NOT up palms outward as a surrender position, and the angle of the fatal head shot determines that he was falling forward toward the officer. This is the part that I'm not comfortable with. This could be that Brown lunged toward the officer, but this is not so sure. If he bent over as a pain response to his arm being shot, that might make sense, but usually that response would be to pull the arm towards the chest, but he was shot more in the chest. That would have caused shots in the arm potentially in my opinion. Another unpredictable factor is the fact that they did find brown was under the influence of THC, but to what extent his thinking was impaired or what effect that had on the incident, there's no way to know.
Was he up close and 'fighting' with the officer or was he at a distance and charging the officer?
That article says brown was shot in the back of his arm; how would that happen if he was charging the officer?
Urgh, now I wanted to recheck the actual autopsy report before responding to this, but I can't find it. You see, to say the back of the arm is subjective. Does it mean back of the arm relative to the person? If so, then how do they orient the arm in this case? Palm outward, or top of the hand outward. If you try this yourself, you will see the entire arm rotates depending on if the back of the hand or the palm is outward. So then if the shot was on the edge, which I can confirm that much from the news sources, then back of the arm can very well be misleading. Another way to judge back of the arm could be to say the inner arm and the outer arm where the outer arm is the back. But in respect to the person, that part of the arm is sideways. You see the difficulty?
Edit: there's also thumb outward as a possible orientation
6 witnesses said that he was running and then stopped and put his hands up (maybe after being shot in the back of his arm?); are you saying all 6 witnesses are lying?
This is the part that is a leading question muir. What I'm saying is that none of the witnesses are lying. They could very well all believe what they are saying is the exact truth. But that's just how declarative memory works. Here, watch this video:
http://www.dailymotion.com/video/x1zwxcl_brain-games-remember-this-s01e03_shortfilms
this is a show called brain games that excellently demonstrates the unreliability of eye witness testimony and explains why it can't be trust, when it can't be trusted, and when it can be trusted.