In the wake of Roger Berkowitz's piece on Occupy Wall Street a few days ago, Jeff Nall's article "Hannah Arendt: The Trouble With Representative Government in the US" offers a valuable perspective on the nature of representation and the political sphere.
Nall gets to the heart of Arendt's interest in revolution:
"Before we set out to remake or even just reform our nation, let's have a clear vision of what we want it to look like when we're done. Let's not aim to bring an end to government; let's not aim to use government to care for others; let's aim to reclaim the very idea of citizenship and make each person part of the decision making process, part of a government. It's time for the American public to revolt and take back the power to decide for itself."