"Terrorism doesn't just blow up buildings; it blasts every other issue off the political map," journalist Naomi Klein writes. "The spectre of terrorism - real and exaggerated - has become a shield of impunity, protecting governments around the world from scrutiny for their human rights abuses.
Many have argued that the War on Terror is the US government's thinly veiled excuse for constructing a classic empire, in the model of Rome or Britain.