Group selected purity and no empathy, with affective and magical disorders is the reason.. people without foundational empathy because birds of a feather flock together missattribute emotional 'feelings' to wrong origins often or simply do not have them at all but pretend they own them just like monkeys in troops do. Postmodern progressive prosocial belief relies solely upon such people. Killing those kids is purity, I doubt any higher is possible so far today.
Base rate cognitive bias runs at 95% in the belief that people are more good than bad so things like this and wider keep happening for so many have very little moral foundations to draw from and so many others per capita are apologists with protection given through appathy
They place supply over all other emotional considerations, they know better they just don't care or feel remorse et al. Remorse hurts and empathy motivates but they have never experienced it instead use sympathy at best to fill in the blindness but it cannot.
Literally a supergroup of psychopaths exists today at this centurys level of scientific resolution.
In general association in society today look for a lack of general behavioural embarrassment (they can still do whatever level of mortification is available to them though) from anyone at anytime, anywhere on any personal or social political subject or behaviour, this is a near a rolled gold guarantee as it gets to those emotionally mind blind.
