Hillary Clinton has called for Congress and Silicon Valley to counter an “epidemic” of fake online news, after a conspiracy theorist fired a gun inside a Washington, DC pizza parlor he believed was part of a child sex trafficking ring linked to Clinton. Clinton raised the subject of “malicious fake news and false propaganda” more generally, saying it had “flooded social media over the past year.” But “it's now clear that so-called fake news can have real-world consequences,” she said.