The way the United States intelligence community operates is it doesn't limit itself to the protection of the homeland. It doesn't limit itself to countering terrorist threats, countering nuclear proliferation. It's also used for economic espionage, for political spying to gain some knowledge of what other countries are doing.
Edward SnowdenAre our competitors - for example, China, which is a deeply authoritarian nation - becoming more authoritarian or more liberal over time?
Edward SnowdenWe have to argue forcefully and demand that the government recognise that these programmes do not prevent - mass surveillance does not prevent acts of terrorism.
Edward Snowden