Several people have made several good points.
I think this is a good time to take an opportunity to realize just how unpredictable this sort of thing is. Every officer was, in my opinion, within their rights.
Video one, I think, was justified because the suspect still had a firearm in hand
. Was he fleeing, yes, in a way. However, he was
attempting to jump into a multi-ton piece of machinery which could just as easily kill you as a bullet. In the hands of someone willing to so blatantly shoot at officers, yea, that was justified. Not to mention what might have happened if he did manage to get away. Where was he headed? His ex-wifes to take her and his daughter hostage?
Its always a split second decision and its never going to be easy. If it was, everyone would do it.
Video two, officer simply made a bad decision. With someone that is clearly not intimidated by you and continues to ignore commands I am going to consider switching to a firearm in a hurry, especially at those ranges. Tazer isn't intended for point-blank use. (IMHO, one of the prongs missed him or was caught in the shirt as it was blown in the wind)
Video three, I hate that video. As soon as I saw which one it was I turned it off. Really gets me. Officer was clearly justified in what he did, although as was pointed out, he hesitated too long. On the flip side, officer would have caught some s*** if he was actually unarmed.
Here is an incredible website and even more incredible video. Be warned, the video isn't graphic, but it is very emotional... Reality Training: Lunsford Incident | BLUtube