Introduction
This introduction reviews the challenges posed by falling social and political trust and increasing political polarization, especially in the United States. In particular, falling trust and increasing political conflict raises the question of whether political life is invariably a struggle for victory between groups with incompatible goals and principles. The introduction frames the problem in terms of the need to determine which institutional structures can sustain social trust between persons with diverse viewpoints and values. It then outlines the general argument of the book, which is that liberal institutions, political systems marked by extensive, equal constitutional rights and liberties, have the unique capacity to sustain social trust in conflicted times.