this idea is a synthesis of many things. I generally watch a lot of 1st amendment audit videos. I recently watched surveillance camera man for the first time, and i was reading the nextdoor privacy policy.
How about, we buy some cameras, buy some harddrives, and take a vacation in sf. We will walk around recording everything, and when people ask why we're recording them, we'll tell them we just like to record, run it through a computer to do facial recognition, geolocation and time tag it, cross reference and aggregate it with social network information, and then sell it to anyone who wants to buy it.
even if we don't actually do all that, i just want to piss off at least 1 of these fuckos whose privacy policy is 'we will store all your data forever, aggregate it with everything, and sell it to everyone'