Decades before the 2012 Sandy Hook Elementary massacre in Newtown, CT, the deadliest act of school violence in U.S. history took place in mid-Michigan.
On May 18, 1927, a disgruntled school board member, Andrew Kehoe, detonated 500 lbs. of explosives he'd hidden in one wing of the Bath Consolidated School in Bath Township. The blast killed 45 people and injured 58. Kehoe had also stored another 500 lbs. of dynamite in the school's other wing, which failed to explode. Kehoe later killed himself and four other people in a truck bomb explosion outside the school.