Multitude: War and Democracy in the Age of Empire

Multitude: War and Democracy in the Age of Empire is a book by autonomous Marxist philosophers Antonio Negri and Michael Hardt that was published in 2004. It is the second installment of a "trilogy", also comprising Empire (2000)  and Commonwealth (2009).

Summary
Multitude is divided into three sections: "War," which addresses the current "global civil war"; "Multitude," which elucidates the "multitude" as an "active social subject, which acts on the basis of what the singularities share in common"; and, "Democracy," which critiques traditional forms of political representation and gestures toward alternatives.

Multitude addresses these issues and elaborates on the assertion, in the Preface to Empire, that:

"The creative forces of the multitude that sustain Empire are also capable of autonomously constructing a counter-Empire, an alternative political organization of global flows and exchanges."