No offense - But Rockefeller isn't a scientific citation
There are testimonials on both sides of the effects. And yes NYC had its issues as did many other large cities. But compare violence to that in lower density regions and the effects of "sober" people in these communities, prohibition led to a more productive, successful, and profitable society
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And as for the FDA "denying reality" - There is a reason we have Caveat Emptor policy regarding to drugs as significant as Marijuana, it must be proven that the side effects, risks, damage, and greater strains on society aren't overthrown. There is
NO consensus on Caveat Emptor and reducing the FDA does weaken the drug market undoing years of successful progressive action to protect consumers against faulty drugs and drug companies. Marijuana supporters have proposed legislation to weaken the FDA and senators like Orin Hatch [Republican from Utah] have used the movement to help weaken restrictions on other drugs [Partially why we have more and more risky drugs getting approved]
And let me ask you - what were homicide rates prior to prohibition? Homicide rates were nearly the same from 1915 - 1920 (7 per 100k). The average during Prohibition was 8 per 100k. As I have said, prohibition probably preserved a violence problem to an extent as it gave them an industry which they could be complicit with many more "reputable" alcohol providers
Either way - The death rate from Alcoholism prior to Prohibition was above 6 per 100k - Even factoring in 'fraudulent reports of cause of death" the average dropped below 2 per 100k during prohibition and while that number increased back to 3 per 100k for about 10 years after prohibition - The stigma and society's reactions against Alcoholism reduced that number further over the years.
Now that is just Alcohol related deaths - but put that into comparison - An extra "homicide" per 100k compared to a 3-4 death reduction against Alcoholism. Now that's a little grim, but merely comparing those numbers yes - even despite increased crime, Prohibition was a success. And those are only
some of the benefits from Prohibition