Constitutional laws will stablish the regulations for local governments, states and the federal expressing also the citizen's rights. It deals primary with the governmental powers (the branches of executive, legislative and judiciary) and the most fundamental rights of the citizens, the civil rights (e.g. right of freedom from discrimination) and civil liberties (e.g. Freedom of Speech; Protection from Self-Incrimination; Due Process of the Law and Right to Trial by Jury for Criminal Charges).
The Olmec civilization used to create stone representations of human heads sculpted from large basalt boulders, these are called " Olmec colossal heads". The heads date from at least 900 BC and are a distinctive feature of the Olmec civilization of ancient Mesoamerica.