Following a police shooting in northern Brazil, people started getting messages . On WhatsApp, they were warned to stay indoors that night. Some of the WhatsApp messages were texts, though the most popular was an audio file with a dire warning: “Don’t go to Guama, Canudos or Terra Firme tonight. It concerns your security, ” it said, according to the BBC . “One of our policemen was killed and we will be cleaning the area.” Read more…

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Brazilian Vigilantes Used WhatsApp to Warn People of a Coming Massacre