UN Secretary General Antonio Guterres warned hate speech was spreading online "like wildfire" at a meeting with victims of the Christchurch mosque shootings Tuesday, vowing the world body will lead efforts to extinguish the problem.
Guterres visited the Al Noor mosque, one of two Muslim centres in the New Zealand city where a self-described white supremacist killed 51 people in a March 15 shooting that the attacker live-streamed on Facebook.
"I know there are no words to relieve the hurt and sorrow and pain, but I wanted to come here personally to transmit love, support and total and complete admiration," he said.
Ardern will co-host a meeting of world leaders and tech firms to promote a "Christchurch call" aimed at curbing online extremism.
She has been highly critical of social media giants in the wake of the Christchurch killings, saying they should be "taking ownership and responsibility over their platforms".
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