Criminal justice is the system of practices and institutions of governments directed at upholding social control, deterring and mitigating crime, or sanctioning those who violate laws with criminal penalties and rehabilitation efforts. Those accused of crime have some protections against abuse of investigatory and prosecution powers.
Justice is the legal or philosophical theory by which fairness is administered. The concept of justice differs in every culture.
Understandings of justice differ in every culture, as cultures are usually dependent upon a shared history, mythology and religion. Each culture's ethics create values which influence the notion of justice. Although there can be found some justice principles that are one and the same in all or most of the cultures, these are insufficient to create a unitary justice apprehension.