What's happening in your world?

['thul]

The biggest such event in the earthly nation known as Norway is the 17th of may celebrations. The constitution day.
The scale of it is almost incomparable to events such as the one you described.

Just try to imagine every single child (of school age) in an entire country as well as a considerable number of the adults walking in a parade, with most of the others spread out along the parade route. Then add in that they are dressed in some of the finest clothes they own and that they wave around with flags. Then you get a weak impression of its scale.