And from that lens, what the NSA has done is equivalent to the authorities back in Germany inserting some device into every printing press that would reveal which books people bought and what they read.
Y desde esa óptica, lo que ha hecho la NSA  es el equivalente a que aquellas  autoridades alemanas pusieran algún dispositivo  en la imprenta que revelara qué  libros compró la gente y qué leen.