why is that any time that an innovation comes up to protect the privacy of the individual governments kick against it,citing national security concerns?
Maybe my comment seems too banal. But Captain Obviousness 
says that the purpose and essence of any state is power over an individual. How to manage people, if they become absolutely free and will not be afraid? All states are afraid of the freedom of the individual. Totalitarian states openly control all spheres of human life, but democrats are embarrassed 
, therefore they come up with many tricks. But the goal remains the same.