Rogues' Gallery - The Birth of Modern Policing and Organized Crime in Gilded Age New York

In the early 1870s, an Irish cop named Thomas Byrnes developed new ways to catch criminals. Yet as policing became ever more specialised and efficient, crime itself began to change. Robberies became bolder and more elaborate, murders grew more ruthless and macabre, and the street gangs of old transformed into hierarchal criminal enterprises, giving birth to organised crime, including the Mafia.