A pretty clear historical prospective starts around the TIA discussion: http://www.npr.org/2013/06/19/192770397/the-watchers-have-had-their-eyes-on-us-for-years

A pretty clear historical prospective starts around the TIA discussion: http://www.npr.org/2013/06/19/192770397/the-watchers-have-had-their-eyes-on-us-for-years http://www.npr.org/2013/06/19/192770397/the-watchers-have-ha...