Stories weren’t about issues in those days, they were about setting up a scenario you’d never seen before (paying attention, Hollywood?) and keeping you mercilessly hooked by your need to know What Happens Next.

Every city has a side it doesn’t show the world, and this riveting documentary explains why that of Los Angeles is more dangerous, explosive and racially charged than most.

It doesn’t feel like a Michael Moore movie, with little of his cult-of-personality showboating. There are several ultimately pointless musical acts and it gets a little repetitive, but the editing manages to generate a sense of slowly building hope which history reminds us wasn’t enough to spare us from Bush’s second term.