Draconian methods seldom succeed unless they are so severe that they produce a violation of human freedom and rights WORSE than the evil that they are meant to reduce.
https://web-clear.unt.edu/course_projects/HIST2610/content/07_Unit_Seven/22_lesson_twenty-two/04_prohib_crim.htm
Violent Crime
The rise in organized crime associated with Prohibition also brought a significant increase in violent crime. Orchestrated by Capone, the infamous St. Valentine’s Day Massacre was one example of numerous murders committed by mobsters in their quest for territory to distribute illegal booze. Murder rates skyrocketed in all major U.S. cities. The pre-Prohibition murder rate of 5.6 per 100,000 nearly doubled to almost 10. Other major crimes increased as well. Overall violent crime such as murders, batteries, and assaults increased by13 percent. Supporters of Prohibition had argued that the opposite would occur but the only category of crime that saw a decrease during Prohibition were with minor crimes such as swearing and vagrancy.
During Prohibition, the number of people serving time in prisons increased dramatically. The federal inmate population increased 561 percent from the pre-Prohibition period. State prisons, such as New York’s Sing Sing prison, also saw a large increase, which placed an enormous financial burden on all levels of government. This new burden precipitated a need for more tax revenues, threatening the vibrant economy of the 1920s and limiting government options once the economy began to decline.