John Dillinger (1903-1934) was a Depression-era gangster and bank robber. His gang robbed two dozen banks, crimes in which a dozen people were killed. He became the most notorious criminal of his day, and J. Edgar Hoover expanded the FBI as a consequence to tackle organised crime.
Dillinger was shot dead outside the Biograph Theater in Chicago by federal agents. There were reports that when he died people rushed forward to dip their handkerchiefs in his blood as a souvenir.