Considering that the Brazilian modernization process has been used the law as State s sovereignty instrument, this work discusses the emancipatory opportunities disclosed by the democratic constitutionalism of the 1988 Charter. The goal is to show that the dispute for the meaning of the Constitution ends up being its own civilizational agenda, steered horizontally and plurally by the citizenship through right s litigation. That would be the definition of the judicialization of politics. However, not always the Courts take over this role as the citizenship s mediator or representative. The research will call judicial activism the imperial attitude of the Justice regarding its own ability to establish a national political agenda, because it considers itself as the major if not the only interpreter of the constitutional commitment. Under these circumstances it is plausible to realize the return of the demiurgic action of the monolithic State s sovereignty, however, implemented by the judicial review. This work discusses both judicial and activist inflexions of Brazil s Supreme Court.