May 11, 2021 Since 1969, children’s television has undergone radical changes. Yet while the volume of educational TV programs for young ones has soared, their access to non-kid-friendly content has also increased. One constant for families has been “Sesame Street,” the colorful puppet-driven edutainment program that made Big Bird, Cookie Monster, and Oscar the Grouch household names. Before it became a juggernaut, it had humble beginnings as chronicled in the documentary film “Street Gang: How We Got to Sesame Street,” now available via on-demand outlets. Married filmmakers Trevor and Ellen Crafts, who spoke in an interview their five-year-old daughter briefly interrupted, brought an outsider’s lens even as they worked with Sesame Workshop and The Jim Henson Company to access little-seen archive visuals.