The events are all lined up, and the system is geared for chaos. At any moment, a despotic leader could take control.
But how could it ever happen in America?
With economic collapse again on the horizon, and a basket of issues coming to a head, several factions of the population are tipping towards revolution. Much of it has played out in the election cycle; the establishment has lost all credibility, and the people are seeking anti-establishment voices. Alternate means of maintaining control are implemented.
Homeland Security is taking control of the election process, making a fair election completely impossible. Optics and careful PR is used to script the election, and maintain a favorable narrative – and one that is explosive enough to produce radical and unexpected results that might drive anger over the edge.