english: At the same time, the Munduruku signed a letter in protest against the construction of the Teles Pires hydroelectric dam, responsible for blowing up waterfalls which are considered by the Munduruku people as sacred symbols. On June 21, 2013, the group kidnapped three biologists while they were carrying out environmental studies in the area for dam construction.
non_english: Banner della Campagna Munduruku su Facebook , "per la sospensione di ricerche e centrali idroelettriche nei fiumi Xingu, Tapajós e Teles Pires – nessuna diga senza il nostro consenso".