The video is very cleverly done and I think it would have taken a team of people to do it. Not innocent teenage girls.
Watch it again carefully, look how the pictures are ordered, look at how they try to get emotional response, look how it starts innocently then slowly changes.
You'd be surprised how smart some of these teens are nowadays, especially with this kind of stuff. Anyway, pretty harmless, aimed at people that can't even vote anyway - teen and preteen girls.