Today, at dozens of cities across the world, one million people will be marching. Many will be wearing Guy Fawkes masks, and protesting against...well it's not exactly clear. Injustice and corruption have both been mentioned. But internet spying by the NSA and other government agencies will be the main rallying call.
David Cameron's plan to introduce opt-out Internet censorship at service-provider level genuinely scares me. What's more worrying is his treatment of the technical arguments against such a move: in his speech he said, "Set your greatest brains to work on this... You're the people who have worked out how to map almost every inch of the earth from space." Which is to say: "I don't want to talk about the problems or consequences. Just do it."