But it wasn’t just those in power. The film shows how this strange world was built by all of us. We all went along with it because the simplicity was reassuring. And that included the left and the radicals who thought they were attacking the system. The film reveals how they too retreated into this make-believe world – which is why their opposition today has no effect, and nothing ever changes.

Adam Curtis’ new film HyperNormalisation to premiere on BBC iPlayer this October