The bass player in this band has a first cousin who was in the library and witnessed and survived the Columbine massacre.
I don’t know why this song was written or what it meant to the writer. If the lyricist is to be believed, then his objective has been met. He claims to want you to discuss teen violence and culture.
If he meant to provoke thought anNd discussion about HIM, AND HIS MOTIVATIONS AND SOCIAL RESPONSIBILITY, He is successful. His juxtaposition of a pleasurable melody IS the subject, not the causes or horrors of teen mass shootings.