Macron said he hoped to see a "more concrete and formal commitment" from the US [Source: Reuters]

The US has declined to join an international initiative aimed at tackling the spread of terror online.

The White House said on Wednesday it supported the Christchurch Call’s aims but was “not in a position to join”, citing the need for freedom of speech.

The comments came as five of the world’s biggest tech companies pledged to tackle extremist material.

The Christchurch Call was launched in response to a deadly terror attack that was live-streamed on Facebook.

The March attack launched by a lone gunman on two mosques in the New Zealand city of Christchurch left 51 people dead.

What is the Christchurch Call?
The Christchurch Call is a voluntary commitment by governments and tech companies to improve their efforts to tackle extremist content.

It was spearheaded by New Zealand Prime Minister Jacinda Ardern and French President Emmanuel Macron, who joined political and industry leaders in Paris on Wednesday to launch the action.

The text of the initiative outlines “collective, voluntary commitments” from governments and internet companies.

These include ensuring that there are effective counter-terrorism laws and that measures are being taken to remove extremist content from social media.

“All action on this issue must be consistent with principles of a free, open and secure internet, without compromising human rights and fundamental freedoms, including freedom of expression,” it says.

“It must also recognise the internet’s ability to act as a force for good, including by promoting innovation and economic development and fostering inclusive societies.”

What did the tech companies pledge?
As well as signing up to the largely symbolic document produced in Paris, leading tech companies agreed to a nine-point plan for putting the Christchurch pledges into action.

Among their commitments, Facebook, Amazon, Google, Twitter and Microsoft said they would update their terms of use to “expressly prohibit the distribution of terrorist and violent extremist content” and develop crisis protocols to respond to emerging or active events such as a terror attack.

The companies said they would also commit to publishing “transparency reports” on the detection and removal of terror or violent extremist content.

“Terrorism and violent extremism are complex societal problems that require an all-of-society response. For our part, the commitments we are making today will further strengthen the partnership that governments, society and the technology industry must have to address this threat,” the companies said in a joint statement.

Live-stream limits
Before the event in Paris, Facebook announced curbs on its streaming feature.

The tech giant said there would be a “one-strike policy” banning those who violate new Facebook Live rules.

In a statement, Facebook said that anyone sharing “violating content” like a statement from a terrorist group without context would be blocked from using Facebook Live for a set period, such as 30 days.

Ms Ardern called the measures a “good first step”.