What’s sad is that with an ever increasing population we’ll see more and more headlines like this just because there are more people in the world. It’s like the predicament the airline industry is in, even as air safety improves, the total number of flights is also dramatically increasing, hence the number of crashes can increase even as the odds of an individual crash happening goes down (based on a percentage of the total number of flights). However, when the news media gets hold of the story the entire thing is blown out of proportion to what the actual percentages of actual crashes/flights are.
One hundred years ago there may have been a higher percentage of such shooting instances; however that would be based on a world population of one billion. Today with a world population of six billion+ even if the percentage of school shootings has gone way down, you can still have a much larger total number of shootings. The heck of it is, the guy could have gone raging through the crowd swinging a sword and actually killed and injured more people.
Steve