By contrast, nearly three quarters of police departments named heroin and meth as their top drug threats this year. The perceived threat of heroin has more than quadrupled since 2007, according to the survey. And after rising sharply from 2007 to 2013, the threat posed by prescription painkillers has subsided considerably in the past two years.
The state and local police also say that marijuana is not a big driver of crime. Only 6 percent said that marijuana was the most serious driver of violent crime in their communities in 2015, and 5 percent said it was the biggest contributor to property crime. This contradicts arguments made by some high-ranking law enforcement officers recently that marijuana is somehow driving an increase in murders this year.
Despite this shift in thinking, arrests for marijuana possession continue unabated. Cops keep arresting people for marijuana possession. This might be a simple question of low-hanging fruit: Marijuana is by far the most widely used illegal drug, and more users means more potential arrestees. But these arrests have serious consequences for the people caught up in them, and they divert precious police time and resources away from more serious crimes, like rape and murder.
The DEA's latest drug threat assessment makes an implicit argument for smarter policing: If marijuana is of little concern while heroin and meth are a big worry, then devote less time and resources to the former and more to the latter. The report notes that over 46,000 people died from drug overdoses in 2013. What it doesn't mention is that not a single one of those overdoses was caused by marijuana.