Brazil: Caveirão -- Rio’s real “bogeyman”, su web.amnesty.org, Amnesty International, 13 marzo 2006. URL consultato il 19 settembre 2008 (archiviato dall'url originale il 7 dicembre 2007).
«“The caveirão has become a powerful symbol of the failings of public security policies in Rio de Janeiro. It typifies the police’s confrontational and divisive approach to Rio’s public security crisis,” said Marcelo Freixo of Global Justice at the launch of a campaign against the use of the caveirão in Brazil’s favelas.»
