That said, I think the big problem here is the lack of situational awareness. The fact that everyone--reporter, cameraman, and interviewed person-- allowed a gun toting individual to walk up, almost right next to one person (gun was level within inches of cameraman's shoulder), point a gun at someone else a few feet away--while muttering "bitch"--for several seconds, then back-off for another few seconds, and turn back to shoot is, in my humble opinion, unbelievable. One person lacking situational awareness is one thing, but all three????
This is why I included the TV crew story about a minor fire in my hood. While the reporter was putting on make up and the camera man was setting up to go live, anyone could have ambushed them. Situational awareness is not something news crews out on the "beat" for municipal matters worry about. Go in, do a report, get some footage for a 15 second spot to include in the 11 o'clock broadcast and then either return to base or go to the next nexus of footage.
Here in Seattle, I have had several media regulars over the years, both TV and radio and believe it or not they are regular people. Some are nuts and manic. But for the most part they are normal. These two would have had no reason to fear for their lives doing a puff piece. I think.