Who's running the rabble?

As it was unfolding, the storming of the US Capitol building looked like the very definition of chaos. But now that the dust has settled, we're learning just how organised it was. So who was pulling the strings, and how? Today on The Signal, the planning behind the moment when the seat of American democracy was overrun. What will it mean for Donald Trump's impeachment trial? Featured: Sarah Ferguson, ABC TV investigative journalist, Washington DC