David Miranda, a child of the Rio de Janeiro slums who became a leading voice for gay rights in Brazil’s Congress and who played a supporting role in the leak of classified documents by Edward J.
Snowden, died on Tuesday in Rio de Janeiro. He was 37. His husband, the American journalist Glenn Greenwald, said Mr. Miranda died in the intensive care unit of a hospital after a nine-month struggle with an abdominal infection.
It was Mr. Miranda’s role in the Snowden leak that led to his political career. In 2013, Mr. Snowden, a former contractor with the National Security Agency, handed a trove of highly classified documents about American surveillance programs to Mr.
Greenwald and several other journalists, infuriating American officials and setting off an international debate over mass surveillance and privacy.