The world's most powerful information gatekeepers neglected their duties in Las Vegas. Again. From a report: In the crucial early hours after the Las Vegas mass shooting, it happened again: Hoaxes, completely unverified rumors, failed witch hunts, and blatant falsehoods spread across the internet. But they did not do so by themselves: They used the infrastructure that Google and Facebook and YouTube have built to achieve wide distribution. These companies are the most powerful information gatekeepers that the world has ever known, and yet they refuse to take responsibility for their active role in damaging the quality of information reaching the public. BuzzFeed's Ryan Broderick found that Google's "top stories" results surfaced 4chan forum posts about a man that right-wing amateur sleuths had incorrectly identified as the Las Vegas shooter. 4chan is a known source not just of racism, but hoaxes and deliberate misinformation. In any list a human might make of sites to exclude from being labeled as "news," 4chan would be near the very top. [...] Of course, it is not just Google. On Facebook, a simple search for "Las Vegas" yields a Group called "Las Vegas Shooting /Massacre," which sprung up after the shooting and already has more than 5,000 members. The group is run by Jonathan Lee Riches, who gained notoriety by filing 3,000 frivolous lawsuits while serving a 10 year prison sentence after being convicted for stealing money by impersonating people whose bank credentials had been phished. Now, he calls himself an "investigative journalist" with Infowars, though there is no indication he's been published on the site, and given that he also lists himself as a former male underwear model at Victoria's Secret, a former nuclear scientist at Chernobyl, and a former bodyguard at Buckingham Palace, his work history may not be reliable. The problems with surfacing this man's group to Facebook users is obvious to literally any human. But to Facebook's algorithms, it's just a fast-growing group with an engaged community.