There are moments when you read something and your first reaction isn't outrage. It's something slightly more depressing. You sit there, stare at the screen and think: “Surely we're not doing this now?” Well, apparently we are. The latest revelation is that a government body responsible for overseeing the UK's Prevent counter-extremism programme has been monitoring social media for people criticising Prevent itself. Not terrorists. Not bomb makers. Not people planning to blow