If storing DNA for criminal investigations helps identity the perpetrators and eliminate the innocent, why don't we include samples from everyone?
Deciding whether force is necessary, reasonable and proportionate is often subjective, and this can leave both inmates and staff vulnerable.
As New Zealand marks the second anniversary of the March 15 atrocity, the general terror threat has increased and doubts persist about police and security agency preparedness.
We should beware of employing public anger or suspicion as a compliance tool, and let the police and courts do their jobs.
Simon Bridges's attack on New Zealand's 'wokester' police commissioner might work as politics, but it fails to grasp the nature of policing in an open society.
The 800-page report of the Royal Commission of Inquiry into the Christchurch terror attacks ultimately asks New Zealanders to look to themselves to prevent such an atrocity happening again.