Ben Elgin

Russia’s social-media trolling operation began stepping up its Twitter presence to new heights in late July 2017 -- more than eight months after sowing discord and disinformation in the 2016 presidential election. The burst of activity -- revealed in a new, comprehensive dataset of nearly 3 million tweets -- had an overriding focus over the ensuing three months: popularizing headlines and news stories that were originally authored by a US-based news site called Truthfeed that supports President Donald Trump and specializes in hyper-partisan, factually incorrect stories.