Keeping The Devil Down In The Hole.
The proposition being advanced by Davidson, Ghahraman, and many others on the left, is that terrorist acts are the by-products of societies steeped in racism and xenophobia: that they constitute the merely the awful apex of a much larger pyramid of prejudice. By discouraging the expression of the milder prejudices embedded at the base of this grim pyramid, they argue, their transmission upwards to damaged individuals like the Christchurch shooter can be interrupted, and lives saved.