Changes in homicide and suicide rates during Prohibition in the US 1900-1950

Once described by US President Herbert Hoover as "a great social and economic experiment", we now know that Prohibition was ultimately a failure, that led to increased crime and violence and gave way to a new era of mafia and mob influence in the United States. On January 17, 1920, the Volstead Act came into effect and the manufacturing, transportation, importation and sale of alcohol became federally prohibited across the United States, and while consumption was not a federal offence, it was sometimes prohibited on a state level. Opposition to Prohibition remained strong throughout the 1920s, and the Great Depression (starting in 1929) led many to advocate for the sale and taxation of alcoholic beverages in order to ease the US' economic woes. One of the reasons why Franklin D. Roosevelt was elected in 1932 was due to his promise of ending Prohibition, which he did with the Ratification of the 21st Amendment on December 5, 1933.

Impact on homicide rate

In the two decades before Prohibition, the recorded homicide rate in the United States was growing gradually, although often fluctuating in the 1910s. When Prohibition came into effect, the homicide rate continued on it's previous trajectory, but without fluctuating. While homicides related to alcohol consumption may have declined, some historians speculate that the total number could have continued to rise due to the increase in criminal activity associated with the illegal alcohol trade. The homicide rate in the US reached it's highest figure in the final year of Prohibition, with 9.7 homicides per 100,000 people in 1933, before falling to roughly half of this rate over the next ten years (this decrease in the early 1940s was also facilitated by the draft for the Second World War).

Impact on suicide rate

Alcohol's contribution to suicide rates has been significant throughout history, however it is only through more recent studies that society is beginning to form a clearer picture of what the relationship between the two actually is. In the first half of the twentieth century, there was no record of alcohol's role in individual suicide cases, however there was a noticeable change in the US' suicide rate during the 1920s. Prior to Prohibition, the suicide rate had already fallen from over 16 deaths per 100,000 people in 1915 to 11.5 in 1919, however this decline has been attributed to the role played by the First World War, which saw millions enlist and contribute to the war effort (a similar decrease can be observed in the lead up to the Second World War). After an initial spike in 1921, the suicide rate in the US then increases gradually throughout the 1920s, spiking again following the Great Depression in 1929. It is unclear whether the reduction in the US suicide rate in the 1910s and 1920s can be attributed to Prohibition, or whether it should be attributed to a variety of socio-economic factors, however the changing figures does suggest some correlation when compared with other decades.