“That spread far, and then the video spread far and wide, and may never be successfully taken down,” Roose continued. “The perpetrator was highly reliant on social media – not only for inspiration – but also in the way that he’s used a GoPro cam to livestream the attack and, immediately prior to the attack, sent out his manifesto and stored it in a number of areas so that it couldn’t be quickly taken down,” said Dr Joshua Roose, a senior research fellow at the Australian Catholic University in Melbourne, in an interview with FRANCE 24. Images of the attack were also shared on WhatsApp and Instagram, two services owned by Facebook, as well as on Twitter and YouTube.