Sure, but let's be real, the vast majority of people who would buy these would be American.
Also, the same privacy laws apply to the UK and I believe Canada and Australia. That's a pretty large population, not just Americans. Sure the EU is well known for having much better privacy laws (much better laws in general IMO), but by no means are they the majority.
Look, I know you are trying to make a point and/or troll, but the fact of the matter is that it is perfectly legal to do so. At least in the US. Even if parents don't like it or protest and even if they get some wanna-be-superhero cop to make an arrest, it would just get thrown out in court. As long as it is public property anyone can record or take photos of anyone else.