Deep in a tunnel under a pineapple field—a subterranean Pearl Harbor–era former airplane factory—I sat at a terminal from which I had practically unlimited access to the communications of nearly every man, woman, and child on earth who’d ever dialed a phone or touched a computer. Among those people were about 320 million of my fellow American citizens, who in the regular conduct of their everyday lives were being surveilled in gross contravention of not just the Constitution of the United States, but the basic values of any free society.
