Authoritarians rule through fear. We can clearly see that from China to the Middle East to eastern Europe. But why do we constantly overlook the way in which fear also shapes democratic societies? It's fuelling populism and distorting our future focus. Then there's anger. It's inspired generations to man the barricades and right society's wrongs. But anger is increasingly becoming a driver of commerce. There's billions to be made in getting you riled up and keeping you that way. Fear fuels anger, and anger blinds you to recognise that your fear might be misguided. A truly vicious cycle.