In the Age of Big Data, Is Privacy No Big Deal?

Last year two US Senators who couldn't provide details said, "most Americans would be stunned" if they knew the extent of government surveillance. Now people know more, and a recent poll shows they're not "stunned" after all. Sixty percent are ready to sacrifice privacy in the interests of security. But others claim the government's gathering much more than it needs to know, accessing the Big Data of Internet giants like Google and Apple. As the companies make big money on what users give them for free, is the government amassing power that could weaken Democracy?