http://motherboard.vice.com/blog/inside-the-effort-to-crowdfund-nsa-proof-email-and-chat-services

“What surveillance really is, at its root, is a highly effective form of social control. The knowledge of always being watched changes our behaviour and stifles dissent. The inability to associate secretly means there is no longer any possibility for free association. The inability to whisper means there is no longer any speech that is truly free of coercion, real or implied. Most profoundly, pervasive surveillance threatens to eliminate the most vital element of both democracy and social movements: the mental space for people to form dissenting and unpopular views.”