Chapter 3 addresses the institutional legacy (that is, the set of formal and informal rules that regulate the exercise of power in a political regime) of the transition to democracy, particularly those institutional dimensions that are more relevant for social movements—what social movement studies have defined as political opportunities. After setting the theoretical framework by specifying the main qualities of democracy the research has addressed, the chapter covers the legal and constitutional provisions on civil (especially protest) rights, political rights (right to resistance, majoritarian versus consensual assets), and social rights as well as practices—particularly with regard to protest, citizens’ participation, protest policing, and concertation.