This was shot during a festival in Cracow called Juvenalia, celebrated by university students since Medieval times.
The students are given the key to the city and parade through the streets dressed in unusual costumes.
I was there by coincidence and went to get some fresh air after long business meeting,
when all of a sudden I found myself in the middle of a crowd of screeming and jumping students. Luckily I had my little S400 in my shirt pocket...