The article is intellectually disappointing, relating tragic anecdotes associated with marijuana use, and treating them as if they reflect a trend (and as if traffic deaths, suicides and violence never occur without marijuana).
The best study shows that traffic fatalities decline after states legalize marijuana.
Google:
Medical Marijuana Laws, Traffic Fatalities, and Alcohol Consumption
I live in the suburbs of Denver, and work in Downtown Denver. It has definitely become a stink hole! Walking through town invites you to the essence of urine and skunk weed. Homeless beggars and folks of all ages leaning against buildings getting high are everywhere. Many businesses have security in their facility. I have had my car window banged on by beggars wanting food. There are more dispensaries in Denver then there are Starbucks in the entire state. I hate living here!