An absolute must read essay in the Guardian by the novelist John Lanchester who was given access to the GCHQ files by the Guardian:
The totalitarian state in Orwell’s Nineteen Eighty-Four would need no broader legal justification than that: it really does allow a government to do anything it likes. It was at this point that I became convinced that Snowden’s revelations are not just interesting or important but vital, because the state is about to get powers that no state has ever had, and we need to have a public debate about those powers and what their limits are to be.
At a moment of austerity and with a general sense that our state’s ability to guarantee prosperity for its citizens is in retreat, that same state is about to make the biggest advance ever in its security powers. In public, the state is shrinking; in private, it is shrinking until it gets just small enough to fit into our phones, our computers, our cars, our fridges, our bedrooms, our thoughts and intentions.
People misunderstand what a police state is. It isn’t a country where the police strut around in jackboots; it’s a country where the police can do anything they like. Similarly, a security state is one in which the security establishment can do anything it likes.
We are right on the verge of being an entirely new kind of human society, one involving an unprecedented penetration by the state into areas which have always been regarded as private. Do we agree to that? If we don’t, this is the last chance to stop it happening. Our rulers will say what all rulers everywhere have always said: that their intentions are good, and we can trust them. They want that to be a sufficient guarantee.