I've been reading Yakuza: Japan's Criminal Underworld recently (fascinating read about the yakuza's history in Japan) and it mentions that a large percentage of

I've been reading Yakuza: Japan's Criminal Underworld recently (fascinating read about the yakuza's history in Japan) and it mentions that a large percentage of Chinese and Korean immigrants turned to gang life because they were considered a lower caste, like the burakumin (Japan's untouchables). Maybe things have changed since the 80s-90s?