Nationalist and ethnic conflict can take many forms, from genocidal violence and civil war to protest movements and peaceful squabbles in democracies. Nationalist Passions poses a stark challenge to extreme rationalist understandings of political conflict. Stuart J. Kaufman elaborates a compelling theory of ethnic politics to explain why ethnic violence erupts in some contexts and how peace is maintained in others. At the core of Kaufman´s theory is an assertion that conflicts are initiated due to popular "symbolic predispositions"—biases of all kinds—and perceptions of threat.