Considering the typical relationship between street level drug dealers and drug users what other ways does this hurt anyone other than those individuals who want to engage in this activity? This is what I came up with:

The problem that often comes up is how the drug user may resort to criminal activity to support a drug habit, resorting to anything from shoplifting, to robbery, to sex work to earn extra money to pay for the drugs. This activity increases the danger to everyone living in the area where the "mutually consenting" drug transactions are occurring.

Please provide references/resources to support your thought. Any references are able to be used to support the thought.