The Avá-Guarani community have received little recognition of the destruction of their land by the Itaipu dam on the Paraguay-Brazil border The Avá-Guarani community have received little recognition of the destruction of their land by the Itaipu dam on the Paraguay-Brazil border W hen the Indigenous leader Teodoro Alves was a young child in his community of Ocoy-Jacutinga, on the border between Paraguay and Brazil , a river ran through it. The Paraná River, which rises in Brazil and flows south