There was more there than freaking Al Capone. There was a case study from NY you conveniently ignored. Tackle that one.
Here is an article with much in it on the subject:
Black markets create an incentive structure that encourages aggression.
www.google.com
The same trend can be seen with regards to medical marijuana. Writing in the
Journal of Drug Issues, researchers analyzed violent and property crime in 11 Western states and
found, “Significant drops in rates of violent crime associated with state MMLs [medical marijuana laws].” When drugs are legalized, violent crime declines.
Simply put, there is a LOT of money in in illegal drugs. I used Denver in my example, who makes more, the distributors to Denver or the ones distributing to Estes?
Drug cartels ARE violent. They WILL kill to protect their profits. How is that at all disputable? Why are you disputing it?
What do you blame, social welfare?