

Ryan Mac, a BuzzFeed technology reporter, has created a timeline of where he has seen the video, including it being shared from a verified Twitter account with 694,000 followers.Several Australian media outlets broadcast some of the footage, as did other major newspapers around the world.People continue to report seeing the video, despite the sites acting pretty swiftly to remove the original and copies, and copies are still being uploaded to YouTube faster than it can remove them.The attacks were live-streamed on Facebook and, despite the original being taken down, were quickly replicated and shared widely on other platforms, including YouTube and Twitter.PewDiePie later said on Twitter he was "absolutely sickened having my name uttered by this person" PewDiePie has been embroiled in a race row before, so some have speculated that the attacker knew that mentioning him would provoke a reaction online. People have been speculating for years that some memelord would eventually livestream his mass shooting.

There are lessons to be learned from this tragedy. Before opening fire he shouted "subscribe to PewDiePie", a reference to a meme about keeping YouTube star PewDiePie as the most-subscribed-to channel on the platform. I believe people who can stomach it should as a training aid.

