The collection and maintaining of huge files of information on our communications, our movements, our online searching, and much else about our individual lives is, as Laura Bate notes, hardly something that the National Security Agency or any other arm of government originated. By far the greater share of the assembling, and the exploitation, of storehouses of data about the activities of individual Americans occurs in the private sector. So why should there be so much fuss about what a government agency may be doing along this line, while there is equanimity about the much greater amount of such activity by non-government enterprises? Is there something intrinsic to government that ought to make us more worried about such data mining? Let us consider the possible bases for concluding that there might be.
Potentially the strongest such basis has to do with the presence or absence of a free market, and related to that, whether or not the activity of the individuals on which data are being collected is voluntary. When I use a search engine on the Internet I am voluntarily using a free service in return for being exposed to some advertising and allowing the operator of the search engine or my Internet service provider to collect, and exploit, data about my interests. Most interactions with government agencies and especially security agencies do not involve as much voluntarism. So maybe it is logical to be more persnickety for this reason about what government entities are doing.