I'm referencing times that I wasn't a part of, but my impression was that mass shootings weren't so popularized until Columbine. Previously, mass shootings were

I'm referencing times that I wasn't a part of, but my impression was that mass shootings weren't so popularized until Columbine. Previously, mass shootings were simply not something that crossed people's minds as something they could do. I suspect that now it's "trendy" for mentally deranged people to shoot up a building, but it will eventually pass, just like how there used to be a lot of serial killers in the 80s.