The celebrations of the twenty-fifth anniversary of the Public Civil Action Law, considered an important milestone in the process of re-democratization of the country and valorization of citizenship, drove this work. Bringing together first-rate specialists from the legal world, it presents expressive manifestations on the most varied aspects, contributing to a better understanding of this important instrument for enforcing the institutional guarantees provided for in the 1988 Federal Constitution. The deviations of the public civil action that negatively affect its image, the latest changes it has undergone, its meaning, and legal, social, and political consequences are some of the topics addressed.