The Newroz Festival is held by the several thousand or so Kurdish residents of Kawaguchi, Saitama Prefecture. Right-wingers in Japan constantly accuse the tiny minority of somehow single-handedly turning Japan into a Mad Max-style wasteland.
Kawai Yūsuke is what you'd call "a piece of work." He gained infamy masquerading as The Joker and pulling stunts such as using the Tokyo gubernatorial election poster boards to call for the legalization of marijuana.
In the past two years, Kawai realized the real money was in the right-wing grievance grift, so he switched to hating on immigrants, helping Japan's government distract from the country's real problems.