Just keeping you safe from the terrists. Otherwise they will win.
They have already won. The United States is bankrupt (monetarily and morally), and the American .gov is spying on its own citizens to an unprecedented degree. Americans have no real freedoms, only the illusion of freedom, half of America is owned by the Chinese, and all the gas stations, quick-marts, and budget hotels are owned by Pakistanis (all named Patel).
What's left for us to lose?