The brazen nature of of the broadcast, and the tech companies’ failure to prevent its proliferation online, raised profound questions about the nature of internet radicalization. We are working to have any footage removed,” New Zealand police said. “We would strongly urge that the (video) link not be shared. Police said they were aware of a video shared online and broadcast live during the attack, which apparently shows a gunman walking into a mosque and opening fire. But in a social media post just before the shooting began, an account believed to be linked to the gunman posted a link to an 87-page manifesto that was filled with anti-immigrant, anti-Muslim ideas and explanations for an attack. Attack apparently broadcast live on social mediaĪuthorities declined to discuss the potential motives behind the attack.