Watching this gave me a flash-back to first grade, when the teachers and librarians made us sit through a bunch of indoctrination on Earth Day, and at the end of the day made us make signs, get our coats on, and go march around the school to "protest pollution" and "acid rain" (I don't think we were using the term "global warming" way back in the early 80's.)
Even as as kid, I remember thinking how bizarre and abstract it all felt... i.e., that it was a bunch of BS.
Kids being used for political and ideological agendas is twisted and perverse. These parents should be ashamed... granted, most of them have the same propensity for critical thought as the average toddler.