Hillary Clinton murdered her political opponents, used body doubles, and ran child sex rings. Sounds absurd? It is. But these stories were part of a tidal wave of fake news that hit the presidential campaign of Sen. Bernie Sanders. Where did it come from? An explosive Huffington Post expose details how fake news from Russia and Eastern Europe — from the same shadowy sources that were working to promote Donald Trump — began overwhelming Sander’s social media in mid-2016. We discuss the story, fake news, and its impact with two investigators.

Ryan Grim, Washington bureau chief for The Huffington Post and an MSNBC contributor 

John Mattes, former Emmy-award winning investigative consultant for ABC World News I-Team in Miami and reporter.