The first part is a mix of Charles Taylor's notion of social imaginaries, Naomi Klein's Shock Doctrine, Robert Reich's Inequality for All, and Noam Chomsky's talks on solidarity. Then he gets into specifics about our ideas around our communities, environment, economics, and democracy.
He starts with the idea that we need a new story to guide us. Our cultural mythologies (or social imaginaries) give us the range of behaviours that seem reasonable. Monbiot describes it as "narrative fidelity":