New Zealand's leader Jacinda Ardern will join other world leaders in launching a "Christchurch call" to curb online extremism at an international meeting in Paris on Wednesday, following the worst mass killing in her country's recent history.
Participants will be asked to commit to pledges to eliminate terrorist and violent extremist content on social media and other online platforms.
The move was prompted by the mass shooting in March at two Christchurch mosques by a self-described white supremacist, who broadcast live footage on Facebook from a head-mounted camera as he gunned down 51 people.
Ms Arden has been the driving force behind the Paris summit, co-hosted with French President Emmanuel Macron, following the tragedy.
"It's a global problem that requires a global response," Ms Ardern said.
In an opinion piece in The New York Times at the weekend, the Kiwi PM said the Christchurch massacre underlined "a horrifying new trend" in extremist atrocities.
Ms Ardern said Facebook removed 1.5 million copies of the video within 24 hours of the attack, but she still found herself among those who inadvertently saw the footage when it auto-played on their social media feeds.
Since the attack, Ms Ardern has strongly criticised tech giants for not doing enough to combat online extremism.
