“Google is actively inciting violence,” tweeted British journalist Carole Cadwalladr with a screen grab of search results of the video.

Some people expressed outrage on Twitter that the videos were still circulating hours after the attack. New Zealand police urged people not to share the footage, and many internet users called for tech companies and news sites to take the material down.

One journalist tweeted that several people sent her the video via the Facebook-owned WhatsApp messaging app.