Who spread disinformation about the MH17 crash? We followed the Twitter trail.

This week, the Russian Defense Ministry tried to discredit the official findings that a Russian missile downed a Malaysian Air flight (MH17) in Ukraine in July 2014, killing 298 people.

In the aftermath of the 2016 U.S. presidential election, tech giants testified before Congress that the Russian Internet Research Agency used fake social media accounts, often posing as concerned Americans, to manipulate the American public. According to Facebook, the covert campaign may have reached the news feeds of as many as 126 million U.S. users.