Chicago
The ratification of the 18th amendment to the Constitution in 1919 made the production and sale (including exportation) of alcoholic beverages illegal in the United States. This ushered in the beginning of what is known as the Gangster Era, a time that roughly spans from 1919 until 1933 when Prohibition was repealed. The 1920s saw gangsters, including Al Capone, Dion O'Banion, Bugs Moran and Tony Accardo battle law enforcement and each other on the streets of Chicago during the Prohibition era. Chicago was the location of the infamous St. Valentine's Day Massacre in 1929, when Al Capone sent men to gun down members of a rival gang, North Side, led by Bugs Moran.
USS Conyngham (DD-58)
On 17 January 1920, Prohibition was instituted by law in the United States. Soon, the smuggling of alcoholic beverages along the coastlines of the United States became widespread and blatant. The Treasury Department eventually determined that the United States Coast Guard simply did not have the ships to constitute a successful patrol. To cope with the problem, President Calvin Coolidge in 1924 authorized the transfer from the Navy to the Coast Guard of twenty old destroyers that were in reserve and out of commission. "Conyngham" was reactivated and transferred to the Treasury Department on 7 June 1924 for use by the Coast Guard. Designated "CG-2", "Conyngham" was commissioned on 8 March 1925, and joined the "Rum Patrol" to aid in the attempt to enforce prohibition laws.