the last book I ever read (Killers of the Flower Moon: The Osage Murders and the Birth of the FBI, excerpt one)

from Killers of the Flower Moon: The Osage Murders and the Birth of the FBI by David Grann:

Only in the mid-nineteenth century, after the growth of industrial cities and a rash of urban riots—after dread of the so-called dangerous classes surpassed dread of the state—did police departments emerge in the United States. By the time of Anna’s death, the informal system of citizen policing had been displaced, but vestiges of it remained, especially in places that still seemed to exist of the periphery of geography and history.