What role does justice play in the formation of public opinion and the scholarly debates about social problems? Does the perception of injustice force problems to appear on the political agenda? Does the perception of an injustice give momentum to social change? Or are violations of self-interest or threats to one's material welfare the more important factors? Or are empathy-driven concerns for the needy and the disadvan- taged motivations to solve societal problems? What is known about the role justice concerns play in leadership? In several chapters of this volume, justice concerns and...