I was willing to get all het up about it, but then I watched the video. Every single person looks like a total tool. This is not Europe united in joy and laughter under a benevolent EU; this is Europe united in uncool.
The message seems to be: if Europe is united, you have to dance like a prick. As such, I am not annoyed, just amused (and slightly sorry for the poor bastards caught "dancing" on video).
I diskard it uterly.