These days, Sesame Street is an institution. But when the show first started, it was charting a radical new path.

Combining the wisdom of education specialists, the tricks of the advertising industry and the dark humour of Jim Henson, the creators wanted to find out what a television show could do if it loved people instead of trying to sell to them.

In the Drawing Room, Marilyn Agrelo talks about her new documentary Street Gang, and explains how the show's integrated cast led to it being pulled off the air in Mississippi.