I don't know about you, but Japanese people who grew up in Japan, in my experience, are the most likely of anyone I've ever known to have active hobbies that they picked up during middle or high school. I don't know of any nationality or ethnic group I'd associate more with having active school-age hobbies.
> does not fight racism
That may be a problem for those who are from visible minorities, but the majority of the children who are refusing to go to school are broadly ethnic Japanese, or Okinawan. Seems like it'd be low on the list.