Excerpt from this article:
You and millions of others turn to Google, where you type in the location of this shooting. You tweet or update Facebook about your rage, your frustration that this has happened again, your despair that politicians will still do nothing to protect you or anyone else from the next mass shooting. Because there will be more. The pattern will repeat itself. We know this. We’ve seen this.
Then you probably forget about it for a bit. Until news about the next mass shooting breaks.
According to Google Trends, interest in a mass shooting peaks on the day of or the day after, and then almost immediately drops off the day after that.
We care about these tragedies. We care about gun control. Why do we lose interest so fast?