See, karrie, here's what's going on.
Most of us recognise that there are problems with the current police/security structure in the U.S. and Canada. So rather than suggesting a patch on the situation with some minor "reform" or other, I tried to get us back to basics. I suggested, fairly modestly I thought, and with plenty of disclaimers that I wasn't presenting a fully-developed plan, that it might could be a notion to examine the whole premise of professional police forces.
Cue the brickbats. First I get argument by anecdote from SLM. Argument by anecdote basically asserts that any notion that won't work in every single situation can't possibly work at all. Which is essentially the argument the gun nuts are presenting against background checks for gun buyers. "Background checks wouldn't have stopped the Newtown massacre, so they're useless!"
Then I get the "What's stopping you from taking care of your community in addition to the police?" I've actually got an answer for that, and maybe I'll discuss it later. But it ain't the same subject as "are the police necessary?"
And ultimately, none of it relates to my original question, which was "Is "privacy" such an unalloyed good that we should knee-jerk cherish it?"