This Saturday , April 20 , is ` ` 420 : International Marijuana Day , '' with festivals worldwide . Nancy Reiman : In 1971 , high school friends invented 420 as code for smoking pot in secret . Nancy : It 's disgraceful It is n't that more people are using marijuana -- those rates have remained stable -- it 's that more people feel they can come out of the closet about their support for marijuana policy reform . so many people are serving time on marijuana charges . She says 52 % of people want new drugs ; 4/20 a good reason to join the effort .
This Saturday , April 20 , is ` ` 420 : International Marijuana Day , '' with festivals worldwide . Nancy Reiman : In 1971 , high school friends invented 420 as code for smoking pot in secret . Nancy : It 's disgraceful so many people are serving time on marijuana charges . She says 52 % of people want new drugs ; 4/20 a good reason to join the effort .