I think this particular sort of mass-killing would become less frequent. Terrorists and the sort of people who are committing these sorts of mass-murders are counting on the sensationalist media to spread their message, which the media always, always does. It's not necessarily their media's fault--they can't *not* cover a mass-killing--but they tend to unintentionally aggrandize the perpetrators in the eyes of the sort of people who might want to follow in their footsteps.
That's a very good question. These days with instant coverage, it must be very tempting to commit an atrocity to get your 15 minutes of infamy or post it online yourself. But I'm sure throughout the ages these attacks have happened and we've just not heard about it because the communication system wasn't up to snuff.
We're definitely an interconnected world so whatever happens, good or bad, we know about it in a flash.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.