The musical Hatoyama couple

The first 45 seconds of this “Real Time News” report about the Hatoyama family contains some really interesting scenes from what appears to be a stage musical that Yukio Hatoyama and his wife put on for supporters:
Does anyone know where that clip comes from, and why they’re wearing weird uniforms with red armbands?
The rest of the video looks at the family life of the Hatoyamas, interviewing their eldest son Kiichiro, who is currently conducting research at the University of Moscow (see English language news reports about him here and here).
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