The New Zealand national flag is flown at half-mast on a Parliament building in Wellington on March 15, 2019, after a shooting incident in Christchurch. - Attacks on two Christchurch mosques left at least 49 dead on March 15, with one gunman -- identified as an Australian extremist -- apparently livestreaming the assault that triggered the lockdown of the New Zealand city. (Photo by Marty MELVILLE / AFP)