When Did T.V. Shows Get So Mellow About Pot?

What the 1980s’ “Just Say No” campaigns spawned: A sea change. “The increasingly normalized depiction of marijuana use on television, taken in conjunction with the increase in American marijuana users, raises a chicken-or-the-egg question: Was TV making Americans more tolerant of marijuana use? Or was the increase in American marijuana users encouraging TV to depict the drug less negatively?”