Professor Alexander Gillespie: Australia has learned valuable lessons from its own shooting tragedies - 6 ideas NZ can borrow

Nearly 30 years before the Christchurch terror attacks of March 15 2019, New Zealand had to grapple with the horrors of another mass shooting. The Aramoana massacre on November 13 1990 left 13 people dead and a nation reeling.

But the firearms law changes made in the aftermath were inadequate, and the failure to tighten regulations arguably left the door open for the Christchurch atrocity – committed by a licensed firearms owner.