To resist the landslide of attacks on our eroding civil liberties in the US, we've got to know more about the intelligence and security complex that has us active political types in their sites.
But first, a little perspective on just how sprawling a system it is that we're facing.
Former director of national intelligence Admiral Dennis C. Blair told the Washington Post: "After 9/11, when we decided to attack violent extremism, we did as we so often do in this country," he said. "The attitude was, if it's worth doing, it's probably worth overdoing."