After World War II, states on both sides of the Atlantic enacted comprehensive social benefits to protect working people and constrain capitalism. A widely shared consensus specifically linked social welfare to democratic citizenship, upholding greater equality as the glue that held nations together. Though the "two Wests," Europe and the United States, differ in crucial respects, they share a common history of social rights, democratic participation, and welfare capitalism. But in a new age of global inequality, welfare-state retrenchment, and economic austerity, can capitalism and democracy...