The first song to talk about school shootings was "I don't like Mondays" by the Boomtown Rats. Leader Bob Geldolf went on to produce Live Aid that raised gazillions for African Famine relief. I've included the video for the 'Rats Mondays (which is really better heard than seen) plus the other two popular answers "Jeremy" by Pearl Jam, and "Youth of the Nation" by P.O.D. You have been schooled!