Pot advocates have long claimed that legalization would reduce crime by suppressing illicit trade and increase government revenue all in one fell swoop.
Neither claim has proven true. Revenues from marijuana taxes in Colorado from the first full fiscal year since legalization are projected to be only 58 percent of what was expected. And there has not been a drop off in violent crime either; the state's homicide rate rose 21 percent the year after voters agreed to legalize pot, and in Denver, gang-related murders are up this year, too.
Links
[1] http://www.washingtonexaminer.com/dont-legalize-marijuana/article/2564219
[2] http://www.rethinkpot.org/tags/legalization