Although America inherited the historic English tradition of citizens individually and collectively protecting self and neighborhood, this concept slowly moved to the background in the nineteenth century with the formation of public police departments. But when crime rates were rising in America during the late 1960s, 1970s, and 1980s, citizens and commerce tried once again to develop their own ways to feel safer and protect their assets. Institutions created internal security measures or hired outside personnel and consultants. Individuals, organizations, and business proprietors spent money on a wide variety of security products and services.
Henry Ruth and Kevin R. Reitz, The Challenge of Crime, 2003