An armed police officer stands guard outside the Al Noor mosque in Christchurch on March 29, 2019.  The remembrance ceremony is being held in memory of the 50 lives that were lost in the March 15th mosque shootings in Christchurch. / AFP / Sanka VIDANAGAMA
An armed police officer stands guard outside the Al Noor mosque, following the Christchurch terror attack. AFP / Sanka Vidanagama

The sanctity of places of worship is universal, yet their perception as targets is centuries old