"The New Zealand police informed us about the Facebook video shortly after the live stream started and we quickly removed both the shooter Facebook and Instagram account and the video" Mia Garlick, Facebook on Australia and New " Policy Director for Zealand, said in a statement.
Hours after the attack, but rough copies of the video continued to appear on Facebook, YouTube and Twitter, raising new questions about the ability of companies to manage harmful content on their platforms.
Facebook "Removes any commendation or support for a crime and shooter or riflemen as we know it," Garlick said.
New Zealand police asked social media users to stop sharing alleged filming and said they were trying to get it removed.
CNN decides to publish additional video information until more information is available.
Technology companies "do not see it as a priority"
Friday's video restores questions about how social media platforms deal with offensive content: do companies do enough to try to catch this type of content? How fast should they remove it?
"Although Google, YouTube, Facebook, and Twitter all say they collaborate and act as a citizen to remove this content, they're not really because they're" playing these videos to show up again, ”said Lucinda Creighton, senior advisor to Counter Extremism Project.
Facebook artificial intelligence tools and human moderators obviously could not detect shooting life. The company says it was warned by the New Zealand police.
"Technology companies basically do not think this is a priority, they divert their hands, they say it's awful," Creighton said. "But what they are not doing prevents it from happening again." John Battersby, a New Zealand Massey University anti-terrorism expert, said the country had been saved due to massive terrorist attacks, partly due to its isolation. Social media has changed it.
"This colleague is living a broadcast, and his supporters excited him and most of them are not in New Zealand," he said. "Unfortunately, when it is already available and it is downloadable, it can still be (on the Internet)," he added.
Video Spreading can inspire copycats, said CNN law enforcement analyst Steve Moore, a special care agent for the FBI. .
“What I would like to tell the public is: Do you want to help terrorists? Because if you do, share it as you do it, ”Moore said.
"Cannot share or share a video," he added
Had Gold, Donie O & # 39; Sullivan, Samuel Burke and Paul Murphy contributed to this report