The war on drugs creates a huge incentive to get into the drug business. A $50 per day habit for Baltimore's estimated 19,000 heroin addicts generates $950,000 a day, every day. A sharp kid who corners just 1 percent of the market will make $9,500 a day tax free. From that angle, it's completely rational to get involved in the drug trade and equally rational to use violence to protect it. Add in the sales of other drugs, and the market might top $1 billion dollars a year in Baltimore alone. All the lecturing, begging, pleading and cajoling will have no effect. Legions of cops in bulletproof vests or even tanks and a gaggle of ATF agents cruising the streets will not change the attractiveness of $1 billion dollars in cash.