(2) Meanwhile, the officers and other personnel do absolutely everything BUT help the guy who is bleeding out in the parking lot. They run up and down the street, they look inside the vehicles, they console the girlfriend, they chase after the white car, etc., but NEVER attend to the guy. While there are at least SIX officers on the "bad guy," there are ZERO officers with the dying "good guy." Now that is frightening.
I am not sure what it is that you expected the officers to be doing for Childress. He got visually assessed multiple times it looks like and had his pulse checked. More than likely, not a single officer on scene had the slightest idea what they should be doing for a person that is headshot. It does not appear from the video that Childress was bleeding out (no pooling blood) and so there wasn't reason to be trying to staunch the flow of blood leaving the body.
What would you have done?