You just say no. The others will either learn the hard way, or never learn. I'm sure the folks involved in this sit were just trying to be helpful, since a cop was shot. They probably would have said OK if their neighbor was shot out of nowhere too.
" How many citizens will have the nerve to refuse to grant "consent" under these highly coercive conditions?"
Roughly 35% and within that 35% are the ones that will back them up.
I don't see this as about guns. It's about Freedom. It extends from seat belts and all the other nanny rules, to searches for other things like your DNA, so they can eliminate you as a suspect.
What I noted about this town was corruption, socialism and of course the jack booted PD. It's unlikely any of these neighborhood folks took a shot at the police. Especially the guy with the pot plants, unless he's suicidal. If anyone did, it was someone with a grudge against one of them. Maybe the cop was pokin' the shooter's OL, arrested a head case that's now loose, or one of the clowns at the broken up drinking party was ahead case. There's also the possibility he was not shot by firearms. Now, did they examine the guns of the 2 cops that were shot at? Hmmm, or is it too late to do that?
I for one would not rule out the chance of blue on blue. Cops who have shot themselves through negligence have reported being shot, there was a thread on a police chief who did this about a year ago. He had an entire PD on the warpath, looking for a nonexistent badguy shooter, when the shooter was himself.