"Nearly two-thirds of Brazil’s 200 million people use WhatsApp to share memes, set up meetings and, increasingly, to vent about politics. Now, the messaging app is helping Brazilians undermine established power structures, injecting a level of unpredictability and radicalization into a country beset by economic and political crises.WhatsApp is upending the role of unions in Brazil. Next, it may transform politics. -- The Washington Post
WhatsApp is particularly suited to organized movements. Unlike Facebook or Twitter, which often provide information to wider audiences, WhatsApp requires users to be invited to participate in groups, which leads to increased intimacy and secrecy, according to researchers. The platform’s voice messaging and photo sharing options enable users of varied educational backgrounds to take part in discussions. And it is free. Disgruntled Uber drivers, feminists and hard-line conservatives here use the app to share ideas and plan get-togethers."