The short-term mass closing of hundreds of medical marijuana dispensaries in Los Angeles caused an immediate increase in crime. "The increase is specific to the type of crime most plausibly deterred by bystanders, and is correlated with neighborhood walkability."

See the source article by following the link below:
The short-term mass closing of hundreds of medical marijuana dispensaries in Los Angeles caused an immediate increase in crime. "The increase is specific to the type of crime most plausibly deterred by bystanders, and is correlated with neighborhood walkability."