A basic clarification: remember in the Care Bears movie (one of them anyways) that one of the characters tells the kids in the audience to chant "We care" to help one of the characters? Or perhaps the whole "Swiper no swiping" from Dora the Explorer?
Well the idea behind this WP is that the audience participation DOES have an effect on the film and by extension, real life.
The only restriction is that the film/TV show MUST have a target audience at least old enough to be aware that in shows like Dora there is no difference in the participation