November 24, 1917: Milwaukee police station bombing

In what remains the second deadliest day in U.S. law enforcement history, nine Milwaukee Police officers were killed in a bomb blast at a police station. It was a Saturday evening, and a suspicious package was discovered alongside the Italian Evangelical Church in downtown Milwaukee. A scrubwoman for the church had discovered the package, and a boy named Sam Mazzone was summoned to take it to the police station. The boy arrived with the package shortly after 7 p.m., as a group of detectives filed out of roll call in the first floor assembly room. According to a police department report, “As detectives examined the package with a fury of haste, it exploded, immediately killing [nine police officers.]” The officers killed were Patrolman Henry Deckert and Detectives Frank Caswin, Fred Kaiser, David O'Brien, Stephen H. Stecker, Charles Seehawer, Edward Spindler, Al Templin and Paul Weiler. The culprits were never caught, but police linked the bombing to a group of anarchists who were seeking revenge against the pastor of the church that had been targeted.