Trolls and triumph: a digital battle in the Philippines

This year, an authoritarian, anti-establishment firebrand won a presidential election with the help of a divisive, innovative social media campaign.

No, not Donald Trump, but President Rodrigo Duterte of the Philippines.

Many attributed his popularity to his straight talk, but something else also helped Duterte secure the presidency - social media. BBC Trending has been investigating Duterte's online machine.

Video Journalist: Andy Brownstone

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