Regarding foreign crime, I remember one funny English conversation class that I had where there was a police officer present. Nice guy, had some great stories. One student asked him if he has to deal with a lot of foreign crime, specifically, Chinese crime. The police officer shocked everyone by saying it was like next to nothing.

That guy had some great stories about the seedy side of Osaka, especially around the minami area (Shin Sekai, Tennoji, Nishinari) near where I live. I hope I get to meet him again.