Hmm, not sure I agree with "he isn't helping just because he forgot or never learned first aid stuff".
For example, there is footage out there of cops shooting their own, and here is what "trying to help even though not an EMT" might look like:
Even if he had a kit in his car, he can't risk getting it with a gun still in the car. From his perspective he felt threatened enough to shoot and the gun is still with the victim(s) which could be turned against him.
The video you provided was different because they immediately realized that the undercover officer was not a threat, and had multiple people on scene as well to start helping.
I was trying to say even if he had a kit and was moonlighting as a rescue squad volunteer, nothing in his behavior indicated he was attempted to help.
The video I linked was an example of how "attempted to help" might look like, and there is difference there it seems.
Can see the other points of wanting to secure the scene or saying he was threated, but don't see the point at all of "well not an EMT, so that's why looked indifferent to the a person's suffering and death. If only he had a kit with him, he would have knelt down and attempted to stop the bleeding, but didn't so kept pointing the gun at him and watched him die..."
Safer for the officer to wait for backup. That was my point.
I only want to respond to the following claims:
> he is not a trained EMT with access to a trauma kit that would stop 4 GSWs [gunshot wound, clarification added]
There are other cases where Minnesota police officers are documented to have responded to gunshot wounds (ref. 2) Indeed, certain MN police departments provide additional training, beyond basic first aid, for trauma situations - see the edit to ref. 1.
Further, you're implying that highly-specialized training ('EMT'), specific medical supplies ('trauma kit'), and injury severity ('4 GSWs') are important in considering rendering aid. My contention would be that, those factors absent, having a gun drawn and yelling at a victim are not appropriate responses to an event of this type.
> he is also alone and has to secure the scene until backup arrives
Backup is clearly present by the time the video is rolling and multiple officers appear on the video when Mr. Castile's girlfriend is removed from the car.
[1] https://news.ycombinator.com/edit?id=12047969
[2] http://www.startribune.com/documents-detail-accidental-eden-...