In fact, if it was wee kids, tots, I wouldn't have liked it either. It's not the lurking pedo that would worry me the most who might run after the kid, since the three teachers would probably do all within their powers to tackle him down. It's the message it sends, we strip kids in public, as if we don't care how ok the kiddos feel being exposed since we assume all kids love being without clothes and all parents are a ok with it. Kids do not know better. They make no difference between public and private, safe place. They are not aware of respect to their bodies, privacy, being discrete, protection, self awareness. I know some read it as fantastic and let's keep these adult concepts for laters. But no. Middle ground in letting them have fun and exposing them to public eye would be nice. Not making them freak out but still aware of possible consequences, which kindy kids already respond to. Naked in the park is not middle ground.
We don't let other beings run naked in public places, those would also prefer their clothes off, who I see on a train with me every morning, their care takers keep an eye on them being protected and functioning within their powers, etc. I know this is far fetched comparison, but those people have zero awareness of how privacy is sometimes a mode of self protection.
I totally see the points of those who come from countries who have taken this protection too far, because of whatever reasons. Paranoia, whatever else resonated in this thread. I get it. It is rather sad. But we won't stop this, we can slow it down by being reasonable and aware, sure.
But let me offer a point of view from a culture that used to be even far more safe there here, until very recently, and then borders opened, and then things changed so fast that it would have been tragic (and it was, a couple of times) if the security measures and people's mindsets haven't adjusted with a speed of light. Society is changing, hanging onto an image that might be dated isn't going to protect the kids.
Disliking the idea of naked little kids in public places without their parents around to assess how comfortable their kid is with this and them being ok with it, does not have to do anything with being paranoid.
I think this thread is fabulous, really. Things like that need to be discussed. Makes people soak up different ideas, be ok with other things, maybe reinforce their views, whatever. It does not say things are done poorly here at all. If the teachers really thought it was a good idea, bless them, since they just wanted the kids happy, according to their believes. But, I did want to take time to state here, that it might not be good idea to just shrug it off, or see this behavior as a proof of CH being the pristine, untouched place on earth.