How the next American Civil War goes.

(*Theocrats* vs *Right-Wing Libertarians*) Vs (*Liberaltarians* vs *Socially Conservative but Economically Liberal Urban Churches* Vs *Social Justice Warriors*) and then race wars and philosophical world views like (spirituality vs militant atheism) vs (Catholics vs Protestant) can add in so many more layers.
And drones and biowarfare will be the primary weapons, with hacking and 3D printers.

That's aside power rivals at the heights of governance. When the Federal government just collapses and so many departments go their own ways.