My text offers an attempt to justify theoretically the existence of an important pillar of contemporary constitutional democracy: judicial review. Why do Supreme and Constitutional Courts that are not electorally accountable organs have the power to modify and occasionally cancel from the books statutory legislation passed by elected and accountable representatives? The argument presented discusses and questions the standard doctrine of the separation of powers and is based on the foundations of modern political authority as the agency the function of (...) which is to protect and guarantee citizens’ rights. (shrink)