"Brazil is formed by immense socio-cultural and environmental diversity. Breaking the paradigm of inclusion and assimilation of indigenous peoples into the culture of the surrounding society, the Brazilian Constitution declared the existence of different forms of society, and affirmed a multi-ethnic identity in Brazil ... Under the Constitution, the indigenous peoples were guaranteed the right to be different and so are treated by the state and society considering their specific rights, such as their collectively -- in particular their customary law." (Quoted from article)