After the Snowden disclosures, the US government learned that the 'should we?' question is as important to ask as the 'can we (legally)?' question. The government decisions regarding surveillance shouldn't be based solely on whether the decisions are legal but also on whether they're right. The question of right encompasses many more issues, such as the value of the surveillance and cost to intangibles including both real and perceived threats to privacy. Governments aren't the only organizations collecting massive amounts of data on private individuals. Indeed, it might well be the case that the government's data collection on individuals is dwarfed by the private sector's. Rather than controlling collection, privacy preservation must focus on controlling the data's use.