Adam Frank Heyer, a 39-year-old male of Caucasian ethnicity, was killed on February 14, 1929, during the infamous Saint Valentine's Day Massacre in Chicago, Illinois. Heyer worked as an accountant for the Moran gang, a rival faction to Al Capone's Chicago Outfit. On that fateful day, Heyer was among seven men lined up against a wall in a garage on North Clark Street and shot by four assailants, two of whom were disguised as police officers.
The massacre was part of the ongoing gang violen ...
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