I remember the first time I read 1984, in middle school. To my young mind it was extremely frightening, and every time I would put it down I would have the same feeling one has when they wake up from a nightmare: relief that it was just a fiction. That it was unlikely to ever happen in real life. Snowden's revelations made me feel like that relief is gone forever.
Right after the revelations came out, I discussed it with a former journalist in Silicon Valley, who was also Jewish American. I could not believe it when he used the, "I'm-not-worried-because-I-have-nothing-to-hide" argument. I guess he never heard the reason why the Nazis were so successful in killing and imprisoning Amsterdam's Jewish population, at a rate that far exceeded other European countries.
The Dutch, you see, are meticulous record keepers. Even today you can find property records that date back to 1600s and earlier. And, at some point along the way, someone thought it would be a good idea to record people's religion, in addition to the more typical things like address and date of birth. Oh, they had been doing it long before Adolf Hitler conceived of his final solution. It must've seemed like a good idea at the time. They probably never thought those records would be used the way they were after the Germans took over the country....