The answer, of course, is too complicated to pin down, though for several days, maybe even weeks, we'll try. Essays will be written about gun legislation, violent video games, and broken homes. I get it. Because, well , here I am, playing with words like they're part of a puzzle, try to make them fit in just the right way so that I can understand.
As is the way these days, people reacted on Facebook and in comments sections on articles. We tweeted and "liked" and "shared". We mourned and cried. We hugged and sighed. We worried and "whyed".