I imagine there are lots of reasons why. Ignorance and brain washing have to be a huge reason. Misunderstood patriotism could be one too but the reason I find of most concern is intimidation The most spied upon people on the planet are the people of the U.S. and I worry their silence is fear. Maybe a once resilient and outspoken people no longer have the stomach to speak up and stand tall?
Maybe Glen Greenwald's analysis is correct. American's surveillance state is breeding fear and conformity.