In both Jacob's, "The Death and Life of Great American Cities" and Hammett's "Red Harvest" there are ample examples of how structure and order in cities play a key role in the success of that city. It is necessary to take into account the way in which a city is structured such as the use of sidewalks and parks to create a safe and orderly environment. Along with the actual structure of the city, there is the necessity for order by means of law. Enforcement of laws in cities ensure the safety of citizens and promotes a peaceful and effective environment. The success and peacefulness of a city is dependent on many factors. Whether it be structure by means of the design and layout of the city, or order kept by laws and peacekeepers. All of these factors play an important role in whether or not the city is thriving.