Bath School Disaster

wikipedia:

The Bath School disaster, also known as the Bath School massacre, was a series of violent attacks perpetrated by Andrew Kehoe on May 18, 1927, in Bath Township, Michigan. The attacks killed 38 elementary schoolchildren and six adults, and also injured at least 58 other people.[Note 1] Prior to his timed explosives going off at the school building, Kehoe had killed his wife and firebombed his farm. Arriving at the site of the school explosion, Kehoe died when he detonated explosives concealed in his truck.