What Facebook Theory Does Jason Calacanis Describe to Mike Sudyk?

On 2 Cent Dad, Jason Calacanis says a theory going around Silicon Valley looks to him closer to true than false. It is that Facebook was paid hundreds of millions of dollars, possibly connected to Russian interests, to run ads it had actually reviewed, and that those ads were fake news. He says some targeted African Americans, using Facebook's ethnicity targeting, to suppress turnout for Hillary Clinton among people who had voted for Barack Obama. He brings in Cambridge Analytica, the Mueller investigation, and ads such as Pizzagate. He presents it as a charge that Facebook cashed checks for fake news, and says the Valley should look hard at itself if that holds.