Wow.
It's official. Apple is going to begin scanning your iCloud photos for "naughty*" things. The system
sounds secure enough, and they sure think they have the high moral ground, but I suspect there are going to be lots of lawsuits. I'm also curious whether or not this is opt-in (or out), and what the legal ramifications may be. Apparently Apple will wait until the photo gets tagged by the phone you have it on and, when that photo gets uploaded to iCloud, Apple will have a human look it over (pedophiles will certainly want those jobs) and then, if a human decides you're naughty, they call the people with guns to come knocking on your door (car door actually, since they can just use location data to come straight to you).
* Definition to change according to the edict of Apple, gubmint, or other.