One Saturday afternoon in Edinburgh's main shopping street, a group of unmasked, unarmed, mainly female singers drifted with nonchalant daring into the main banking hall of Barclays, and unleashed a volley of harmonised lyrics. The prevention of terror has come to mean rapid response armed police units, besuited and politically briefed "experts" and shadowy intelligence units monitoring any thought trend that deviates from yet-to-be-defined "British Values". This group of singers seek to address a different sort of terror, encourage a different way of thinking about our responsibilities as consumers, and suggest a set of human values that Britain's governing authorities and some of its proudest corporate institutions continue to disregard.