Identifying the drug users? 
Okay after that if we identified the drug users what next? And how you know if they cooperate? if they know that drugs is legal now.You didn't know what is the effect of drugs on our life.You want to know why I hate drugs?
Okay after that if we identified the drug users what next? And how you know if they cooperate? if they know that drugs is legal now.You didn't know what is the effect of drugs on our life.You want to know why I hate drugs?Once they are identified, then they should be shown various documentary films showing medial conditions resulting from the usage of hard drugs. Also, they should be encouraged to participate in the drug-substitution therapy. Hard drugs can be replaced with the soft drugs. For example, heroin can be replaced with methadone.