So let me get this straight.
This guy wanders around with a video camera. He finds parties.
At these parties are potentially underage girls, drinking illegaly, taking drugs illegally.
The girls expose themselves and say they're 18.
Later the parents complain that the girls were filmed illegally and therefore its kiddie porn.
Fine, if they prosecute him I hope each and every underage girl is also prosecuted for underage drinking and illegal drugs use. And that each and every parent is examined for their role in their childrens use of illegal drugs and underage alchohol consumption.
The real worry is, this guy only took piccies, what happened to those girls later in the party?