That looks like a giant ……
This was recorded at Kilometer Zero, also known as the centre of Moscow. When you visit this area you will often see people standing on the Zero Kilometer medallion and throwing coins over their shoulders and making wishes.
Grannies and kid, according to the many tourist brochures, line the area outside of the Kilometer Zero marker and pick up the coins after you toss them, supposedly fun for all.
Anyway, there are more grannies jostling for the coins nowadays, and the kids seem to be the ones tossing their change, go figure.