Speaking in the wake of a series of revelations in the Guardian about the extent of the National Security Agency's surveillance operations, Rusbridger said: "Orwell could never have imagined anything as complete as this, this concept of scooping up everything all the time.
"This is something potentially astonishing about how life could be lived and the limitations on human freedom," he said.
Rusbridger said the NSA stories were "clearly" not a story about totalitarianism, but that an infrastructure had been created that could be dangerous if it fell into the wrong hands.
"Obama is a nice guy. David Cameron is a nice social Democrat. About three hours from London in Greece there are some very nasty political parties. What there is is the infrastructure for total surveillance. In history, all the precedents are unhappy," said Rusbridger, speaking at the Advertising Week conference.
He said that whistleblower Edward Snowden, who leaked the documents, had been saying: "Look, wake up. You are building something that is potentially quite alarming."
Rusbridger said that people bring their own perspectives to the NSA revelations. People who have read Kafka or Orwell found the level of surveillance scary, he said, and that those who had lived or worked in the communist eastern bloc were also concerned. Read more >>