In recent decades, U.S. marijuana laws have liberalized substantially. Recreational marijuana use is now legal in 10 states and the District of Columbia, and many more states have legalized marijuana for medical use. In response, legalization opponents have claimed that marijuana use increases crime, violence and schizophrenia.
So is marijuana legalization good policy? Yes.
Recent research casts doubt on alarmist claims about the effects of recent state-level marijuana legalization. By looking at the pre- and post-legalization trends in outcomes such as marijuana use, other drug or alcohol use, marijuana prices, crime and traffic accidents, it becomes clear that state-level marijuana legalization has been associated with, at most, modest changes in these outcomes. The absence of