Marat Mindiyarov worked in the nerve center of Russia’s infamous St. Petersburg troll house. He saw the plan, reluctantly participated in the plot and played a key role in the Internet Research Agency. The organization conducted an operation to trick Americans on Facebook, Twitter and other social media platforms into believing a Kremlin-backed disinformation campaign — until he could no longer put up with the hours, the drudgery and diabolical plot. So he quit and began sounding alarm. Shortly afterward he was arrested. We have all the details on this episode.