From what I&#x27;ve read on the subject the key unifying element seems to be that those who do these deeds want to &#x27;matter&#x27; somehow, even if that can only be in a negative way. How that ties into psychology I have no idea but if you have something to lose that balance shifts measurably, but even then there are still people that can be successfully radicalized. It&#x27;s a tough problem, that&#x27;s for sure.