Nothing lasts forever, whether it's Greece, Rome or the British Empire. It doesn't mean that America has to end. The country could be reshaped and reimagined in a way that is even more democratic and less imperial in nature. We're trying to radically reshape the nation in ways that are more just and fairer. That's what I mean when I say that empires eventually fall. I'm not calling for the end of America. I'm just calling for a reimagination of its democratic possibilities.