Pictorial Evidence of the Benefits of Relaxed Drug Policy

The other day I was walking down an L.A. street and saw a man holding this sign (above), outside of one of the city's many (perfectly legal) medical marijuana dispensaries. He was working for a group protesting the dispensary's allegedly shady business dealings. The economist in me had to take a picture, as this was something one could only see in a region with relaxed policies towards marijuana: a public business dispute. When a product is illegal, as marijuana is for non-medical use in some states like California,  and banned outright in all others, negotiations and disputes must be held in private, away from the watchful eye of the law. This illegality brings about an entirely different way of doing business. In an illegal industry there can be no legal backing behind business contracts, and suppliers certainly could not  publicly call for a boycott, as it would alert the cops. To me, this openness is a step forward. If you stop and think about the methods of negotiation and conflict resolution available to people in the illegal drug trade, you might think so too. Here's a short list of methods that can be used to enforce contracts in illegal industries:

• Stabbings
• Shootings
• Bombings
• Good old-fashioned ass-whoopings
• Leg breaking
• Blackmail
• Vandalism
• Kidnapping
• Etc. etc. etc.

Is it worth it to keep a drug illegal, when its illegality leads to a wider-spread use of the above-mentioned "negotiation methods"? Watching some episodes of Boardwalk Empire might help one mull it over.
I'm not denying that this is a complex issue. Drugs cause harm to society; one must only look to the devastating effects of alcohol and tobacco to see this. However, I think there's one thing everyone can agree on: boycotts are better than bombings.