Dangerous drug
After all, what is the point of wasting officers' valuable time on minor drug users when they could be tracking down big-time dealers? What Tim Hollis should remember, however, is that even occasional use of cannabis can be highly dangerous and can cause severe mental-health problems.
This is not an argument for police targeting minor offenders at the expense of major criminals, but it is a reason for officers to use their discretion and common sense when it comes to cannabis users and for them not to be stifled by overly prescriptive central-government rulings on decriminalisation.