Marlene de Oliveira Cavalcanti Silveira, 71 and her gang of drug dealers is presented to the media. Cavalcanti, known as the &quot;granny of blow&quot; was arrested for selling cocaine from her modest apartment in the beach district of Copacabana in Rio de Janeiro. About 60% of Copacaban residents are over 60 years old, making it one of the oldest neighborhoods in Brazil. (Australfoto/Alan Roberto Lima)