Well, I would say that no matter what, all the rapid gun fans here will not be satisfied with any version of the incident, save for one where the network has replaced the bad guys guns with wrist rockets.
The fact is, the police fucked up and allowed themselves to be "out gunned". No coverage of this incident can be done without some hint of the "assault weapons" are bad ideology, becasue in this instance, they were used by two very bad people. The sheeple of America will no doubt interpret this as all "assault weapons" are bad, all the time, and nobody should have them except the po-po.
What should they do, to make it "non-propaganda"? Put a pro-gun cop on the program with a disclaimer advocating guns? Where is the obvious tilt there?
Incidents like this, cause us all trouble down the road.
Bottom line, even if the program has a completly neutral stance (which, I suspect it wont), it will be percieved as bullshit by the gun crowd and as ammo for the grabbers.