The New Zealand terror attack: How can a grieving country move forward?

In March, 50 people were killed and a further 50 were wounded when a gunman opened fire on two mosques in Christchurch, New Zealand. Former UK police officer and now Research Fellow at Western Sydney University Alan Beckley takes an in depth look at the impact this tragedy has had on New Zealand as it seeks to make sense of what has happened and to prevent it ever happening again.