This is a hard one to figure out, gladwell is also at a loss.  It&#x27;s not like postal worker violent outburst which seems to have been mostly an organizational issue, addressed and corrected, for the most part.<p>This is also not tied to guns, here Ladue was making explosives from everyday items, and guns were more contributor than central.<p>It&#x27;s a strange cultural thing, not really greater culture but subculture with perhaps greater culture associations.  I can&#x27;t even say it&#x27;s like something else, because there isn&#x27;t something like this phenomenon, except maybe Isis, but even there there is active leadership leding impressionable youngsters into a violent morass.  Here it&#x27;s guys in prison who provide the model.