In my opinion we have to consider the deep mind control and programming that has been going on, society is being unfortunately moulded by very able and cunning experts on the workings of human psyche. These "trends", as for instance the "ice bucket challange" and other stuff are simply part of a mass manipulation program.
That goes also for school shootings, are they happening "just" because somebody has been ridiculed by his peers and then they're used to justify more gun control...or are they happening directly because of this agenda? I personally go with the latter.