Constitution of the Republic of Indonesia in 1945 had expressly determines that Indonesia is a country of laws. The principle of state law requires and determine among other things guarantee equality and equality for everyone before the law (equality before the law).

Therefore, the Constitution of 1945 also stipulates that every person is entitled to recognition, guarantees, protection and fair legal certainty and equal treatment before the law. In an effort to realize the principles of law in the state and country life, the role and function as a professional advocate a free, independent and responsible is an important thing, besides the judiciary and law enforcement agencies such as police and prosecutors.