Portuguese-based creole languages used to distinguish locally born black people of African descent from those who had been brought from Africa as slaves. In time, however, this generic sense was lost, and the word "crioulo" or its derivatives (like "Creole" and its equivalents in other languages) became the name of several specific Upper Guinean communities and their languages: the Guinean people and their Kriol language, Cape Verdean people and their Kriolu language, all of which still today have very vigorous use, suppressing the importance of official standard Portuguese. The oldest Portuguese-based creole are the so-called "crioulos" of Upper Guinea, born around the Portuguese
Indigenous peoples in Brazil of the language has been incorporated into the official Brazilian Portuguese language. For example, 'Carioca' the word used to describe people born in the city of Rio de Janeiro, is from the indigenous word for 'house of the white (people)'. The urban rights movement is a recent development in the rights of indigenous peoples. Brazil has one of the highest income inequalities in the world, and much of that population includes indigenous tribes migrating toward urban areas both by choice and by displacement. Beyond the urban rights movement, studies have shown that the suicide risk among the indigenous population is