At Friday's memorial in a Christchurch park, New Zealand Prime Minister Jacinda Ardern called on her country to "be the nation that discovers the cure" to the irrational hate and fear thought to be behind the March 15 mosque attacks. But she freely admitted that New Zealand itself was not immune to such "viruses." She has won praise from around the world for the way she has dealt with the tragedy.

Thousands gathered for the memorial service at North Hagley Park. New Zealand has seen many outpourings of grief and condemnation after the attack, and its leaders have taken immediate action to tighten the country's previously lax gun laws. Military-style semi-automatic and automatic firearms like those used in the March 15 attack are to be banned from April 11.

Among those performing at the Christchurch ceremony was Yusuf Islam, also known as Cat Stevens. Islam, himself a Muslim convert, performed his song "Peace Train." "Our hearts go out to the families of those whose lives were snatched away in that evil carnage while they were worshipping at the mosque two weeks ago," he said before his performance.

The shootings by the suspected Australian gunman also left many people injured. Christchurch mayor Lianne Dalziel called the atrocity "an attack on us all." But, she said, in the end a deed aimed at dividing people had "united us" instead. Services were also held in several other New Zealand cities.

The service in Christchurch was also attended by numerous dignitaries, including Australian Prime Minister Scott Morrison. Among those who spoke was Farid Ahmed, the husband of Husna Ahmed, one of those who died in the attack in the Al Noor mosque. He told the crowd he had forgiven the shooter because of his beliefs. "I don't want to have a heart that is boiling like a volcano," Ahmed said.