The same reporting also exposed the massive deficiencies in the self-regulatory regimes of social media empires.
Christchurch demonstrated, yet again, that the management structures, organisational objectives and operating cultures of these social media giants are inherently contradictory, generally compromised and too often ineffectual.
They emphasised how easily and effectively he had been able to live stream the killings.
They also traced the way the internet had nurtured and fashioned his agenda and they pointed to the global network of white supremacists, neo-nazis, ethno-nationalists and all the other like-minded fringe groups flourishing on the internet.
Christchurch was a complete rejection of everything our schools represent.