This flash mob video has been seen over 3,000,000 times on You Tube. Flash mobs are pretty popular in some parts of the world during political campaigns and Moscow, Russia is no exception to that.
This video was reuploaded to the internet just before the last election. Hard to say if its coincidence or not, but the truth is, the dancing and singing in the video are very happy and upbeat and light. Its a lot of fun.