The film chronicles the introduction of hula hoops which according to Wham -O, the manufacturer, whichwhen first introduced in the late 1950's, more than 25 million were sold in 4 months. One scene from the movie clearly illustrates the difference between movements along the demand curve and a shift of the entire demand curve.

Please enjoy the following clip and explain which scenes explain

1) a shift of the demand curve to the right,

2) a shift of the demand curve to the left.

https://youtu.be/Ng3XHPdexNM