Facebook taps London police to track terror livestreams

Facebook on Tuesday teamed up with the London police to help its artificial intelligence tools track livestreams of terror attacks such as the New Zealand mosque massacre.

In March, a self-professed white supremacist used a head-mounted camera to broadcast live footage on Facebook of him attacking two mosques in the city of Christchurch.

Facebook and platforms such as YouTube came under intense criticism for initially failing to detect the broadcast and then struggling to take down its uploads that proliferated online.

New Zealand's Jacinda Ardern and other world leaders in May launched a "Christchurch Call to Action" against online extremism -- a campaign Facebook and other major platforms quickly joined later that month.

The California-based social media behemoth said Tuesday it was in the process of updating its policies for dealing with extremism and online hate.

"Some of these changes predate the tragic terrorist attack in Christchurch, New Zealand, but that attack, and the global response to it in the form of the Christchurch Call to Action, has strongly influenced the recent updates to our policies and their enforcement."