Prohibition: KC ignored Prohibition during the 1920s, leading to an abundance of jazz clubs, brothels and gambling halls. This earned KC the moniker "The Paris of the Plains" after one journalist wrote "If you want to see some sin, forget Paris and head to Kansas City."
From 1920 to 1933 the United States had a prohibition on all alcohol. It was brought by the 18th Amendment. This is what started all the underground alcohol stills and all the big gang organizations that sold alcohol illegally.
This picture here is of a Sunday school group attempting to sway the local populace’s position on the subject of prohibition. Prohibition was both introduced and repealed in most provinces in the 1920s. The prohibition that was imposed at the time led to a sort of cultural shift where criminals began to be idolized. Mobsters who smuggled alcohol were admired and many people began to spend their time in illegal clubs called speakeasies.