The attacks on mosques in New Zealand made it impossible to deny the threat from right-wing terrorism.
The event, to be held in Christchurch on Sunday, was expected to attract a large crowd, with many travelling from around New Zealand and from overseas.
Prime Minister Jacinda Ardern was in Christchurch attending events to mark the anniversary of last year's March 15 massacre, which she has described as one of New Zealand's darkest days.
The centre-left leader announced Kiwis would go to the polls on September 19, two months ahead of the last possible date for the ballot, when she will seek a second three-year term.
There was little hope of finding the missing alive after overnight aerial reconnaissance flights found no signs of life on White Island after the volcanic eruption.
With the new Zero Carbon bill, the country aims to reduce all greenhouse gases except methane to net-zero by 2050.
President Maithripala Sirisena orders emergency for another 30 days, citing "public security," a month after deadly Easter bombings killed 258 people.
Executives from Google, Twitter, Facebook and Microsoft meet leaders of France, New Zealand and other countries in Paris to unveil the "Christchurch Call" of voluntary commitments by online platforms.
Facebook said in a statement it was introducing a "one-strike" policy for use of Facebook Live, temporarily restricting access for people who have faced disciplinary action for breaking the company's most serious rules anywhere on its site.
UN Secretary General Antonio Guterres visited Al Noor Mosque, one of the places of worship in New Zealand's southern city attacked by a self-confessed white supremacist on March 15.
The Royal Commission investigation will look into the shooter's activities, use of social media and international connections, as well as whether there were inappropriate priority settings in counter-terrorism resources.
Secretary-General Antonio Guterres has kicked off a major United Nations push for progress on what he calls the defining issue of our time: climate change.
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