Catching up I found this article by Scott Atran, sub-titled:
The atrocities in Sri Lanka are part of a spiral of violence that poses profound questions for liberal societies
Later:
The spread of this transnational terrorism, whether Islamist revivalism or resurgent ethno-nationalism, is fragmenting the social and political consensus globally. That is precisely its aim: to create the void that will usher in a new world, with no room for innocents on the other side, and no “grey zone” in between.
Link:https://www.theguardian.com/commenti...ight-sri-lanka

Then today Jason Burke asks:
Are there lessons we can learn from last week’s atrocities in Sri Lanka?
He has this key passage on being radicalised:
Crucially, someone vulnerable to radicalisation at one moment in their life may be much less so just months later. A key element in the explanations of former terrorists for their own actions – as well as in accounts given by Nazi mass killers and others – is that their acts are necessary to head off a catastrophic outcome for their community, that they are an obligation for any rational individual. Combine this with the total dehumanisation of the victims – another product of groupthink, separation and propaganda – and you are already a long way to mass murder, whether in a death camp, through an artificial famine, by a mob armed with knives and axes, or a multiple suicide bombing.
Link:https://www.theguardian.com/world/20...ombings-terror

Both have a global outlook, so will be copied to the general CT thread.