I think this story offers a glimpse into what might happen should drugs be legalized here. Many who support such an idea argue that drug trade related crime and gangbang activity would come to a screeching halt. I have always argued otherwise. I don't think the gangs would just go away. Drug dealers would simply cater to a demand that laws would still prohibit- selling to underage users, supplying more powerful drugs, etc. Yep -- look at tobacco; it's still legal, but a huge black market has arisen in high-tax states like mine. Unless you make legalized drugs dirt-cheap, and sell them to everyone, including minors, there will always be a black market.
It still might be better to legalize drugs, I just don't buy all the benefits to it that the proponents always talk about.