Once Upon A Time, ‘Sesame Street’ Was Actually Controversial

Most of us take the show’s educational purpose (learning letters, numbers, and the like) for granted now, but in Sesame Street‘s early years on the air in the 1970s, experts differed enormously over how effective the program was, and the results of studies were all over the place. Some even argued that the Muppet monsters promoted antisocial behavior and aggression.