The thing is, there is tons of crime involving marijuana. But its really only because the illegal status has caused the drug market to skyrocket making marijuana extremely valuable and expensive. If it were cheap there wouldn't be any problems. Its simply insane that a mere OUNCE of marijuana, a natural growing plant, can hold a market value of upwards of $500. That $500 generating into nearly twice that when it comes to individual sales.

Imagine the government sold cannabis seeds at a moderately reasonable cost to anyone who wanted them, and citizens were allowed to grow their own marijuana. The government would profit on it, and it would be so incredibly favorable over resorting to the drug trade that it would eventually eliminate it almost completely.