The live footage of Friday’s attacks, New Zealand’s worst-ever mass shooting, was first posted to Facebook and has since been shared on Twitter, Alphabet Inc’s YouTube and Facebook-owned Whatsapp and Instagram.įacebook, Twitter and YouTube all said they had taken steps to remove copies of the videos. Bloodied bandages on the road following a shooting at the Al Noor mosque in Christchurch, New Zealand, March 15, 2019.