I think it's a 1984/Farenheit 451/Brave New World/X-Files/People's History/Handmaid's Tale/Steal This Book!/UtneReader/Resurgence/Mother Jones/Daily Worker/Yes!/Mother Earth News kind of plot, and also a way to keep all these FBI people busy and earning their keep! Hey, you never know when another terrorist might be hiding out in your local library.