No peeping photos

No peeping photos (盗撮) sign @ Shakujii River near Oji Station in Tokyo
After taking photos of kids playing in the river I saw this sign telling me not to take photos of kids in the river. I had left my hat, sunglasses, and mask at home, though, so maybe I was OK.
The Japanese like rules. The rules are posted all over everything, even though it’s tough to imagine them doing the things the signs say not to do. In addition, the signs are frequently an eyesore; they tell people to keep things pretty when the scenery would in fact look prettier without the sign.