The news is full of what we are assured are ‘shocking’ revelations about a British policeman infiltrating an environmentalist group, which have come to light because the undercover cop has reportedly gone native and offered to give evidence on the activists’ behalf, causing their trial to collapse. Which aspect are we supposed to be most shocked by? The fact that the police are so paranoid they have spent a fortune infiltrating a conservative little group of eco-activists whose idea of radical protest was normally to climb some trees, cranes and chimneys? Or that a group of allegedly ‘hardcore’ eco-activists could be so easily taken in by a cop poseur?