Technically not murder, as that requires premeditation. However it is apparent that this is a no-win situation for the victim, the officer is clearly intent on creating a situation for a "justifiable" homicide.

What's just as horrifying is that the jury acquitted.

Being 'intent on creating a situation for a "justifiable" homicide' would itself be a form of premeditation, would it not?

IANAL but I believe it could be classified as second-degree murder (no premeditation required)

a bit further, you're absolutely correct; it seems the US has a more nuanced definition of murder, for which any of the three definitions of second degree murder could potentially apply in this case[1]:

  - A killing done impulsively without premeditation, but with malice aforethought
  - A killing that results from an act intended to cause serious bodily harm
  - A killing that results from an act that demonstrates the perpetrators depraved indifference to human life

As for my original point, that just makes the aquittal even more shocking!

[1] http://criminal.findlaw.com/criminal-charges/second-degree-m...

Note that the US does not have a single definition of murder; there are loose common guidelines, but each jurisdiction within the U.S. has its own, slightly different, definition of each form of murder. The specific statutes matter a lot in actual cases even if they get ignored in general discussion, as do the actual charges filed. The fact that another form of murder exists that could have been supported based on the trial evidence will not save a conviction on appeal if the appellate court feels the evidence cannot reasonably support a conviction for the specific form of murder actually charged.

I have seen use-of-force training exercises that look very similar except there is actually a weapon being drawn. I don't think it makes the officer who pulled the trigger innocent, but I believe he behaved exactly the way he was trained, and holding him personally responsible would not prevent this kind of thing from happening again.

Note in particular it is a different officer who is talking in the video and created the whole situation.

Fair enough. The horrifying part to me was not the moment the shots were fired, but the escalation and screaming of inconsistent instructions by an unmistakably bloodthirsty officer to a man who was clearly scared out of his mind and literally begging for his life.