In the US people are getting increasingly angry due to their economic circumstances, despite the fact we live in a growing economy, because the future looks less promising.

What kind of dangerous demagoguery will people turn to if the world economy gets sucker punched? Sure, people will lose, but what happens if a class of people lose far more than everyone else, and refuse to take it passively?

We don't even know what a world without constant growth looks like.

The biggest thing to fear in such a scenario is other people and their weapons.