The Prohibition policy of the 1920s was a monumental shift in the United States, with far-reaching implications in many areas of life. Intended to stop the sale and consumption of alcohol, it had a tremendous effect on American society and culture. 

The effects of the prohibition policy, or the nationwide ban on alcohol that was put in place in the United States from 1920 to 1933, are still felt today. This policy and its consequences have had a lasting impact on American society, culture, and politics.

The main effect of Prohibition was the massive reduction in the consumption of alcohol. From 1919 to 1933, the sale and consumption of alcohol were outlawed, as was the distribution of any alcoholic beverage. This had an immediate impact on the drinking habits of the American public. Many people stopped drinking altogether, while others switched to illegal forms of alcohol. The result was a dramatic increase in sobriety and a decrease in alcohol-related deaths and diseases.

Another obvious effect of the prohibition policy was the rise in criminal activity. With alcohol now illegal, the production, distribution, and consumption of alcohol became criminal activities, leading to the rise of organized crime and the development of powerful criminal organizations. The most notorious of these was the notorious Chicago gangster Al Capone, whose infamous criminal empire was built on the illegal production and sale of alcohol during the prohibition era.

The proliferation of criminal organizations and activities during the prohibition period also had a major effect on police forces throughout the country. Police forces were ill-equipped to deal with the sudden rise in organized criminal activity, leading to an increase in corruption and a decrease in public trust in law enforcement. This in turn led to a decrease in public safety and an increase in criminal activity.

The prohibition policy also had a major economic impact on the country. The ban on alcohol led to a decrease in revenue from taxes on alcohol, which in turn led to a decrease in government revenue. This in turn led to a decrease in public services and an overall decrease in economic growth.

The prohibition policy also had a major effect on the culture of the United States. The ban on alcohol brought about a decrease in leisure activities, as bars and saloons were closed, and alcohol was no longer served in public places. This led to a decrease in social gatherings, as well as a decrease in the number of people attending church services, sporting events, and other recreational activities.

Overall, the effects of the prohibition policy are still felt today. The consequences of this policy have had a lasting impact on American society, culture, and politics, and the effects can still be seen today. From organized crime to a decrease in government revenue, the effects of the prohibition policy are lasting and far-reaching.