And here's an excerpt:
Prohibition creates violence because it drives the drug market underground. This means buyers and sellers cannot resolve their disputes with lawsuits, arbitration or advertising, so they resort to violence instead.
Violence was common in the alcohol industry when it was banned during Prohibition, but not before or after.
Violence is the norm in illicit gambling markets but not in legal ones. Violence is routine when prostitution is banned but not when it's permitted. Violence results from policies that create black markets, not from the characteristics of the good or activity in question.
The only way to reduce violence, therefore, is to legalize drugs. Fortuitously, legalization is the right policy for a slew of other reasons...
h/t: Steve, who says: "Either you have drugs and violence on the streets, or just drugs. Seems like an obvious choice."
I'll second that.
Cross-posted to The Shotgun.