College students and minorities is what you're saying. Japan like most Asian countries send their kids here for college so they aren't there to riot, and Japan doesn't allow blacks and hispanos to live there.
Wow. You are just really the worst shill ever. Japan has some of the best, if not the best, universities in the world right now. Why the heck would they want to come here? Tokyo U is a massive university that damn near every Nihon-go aspires to get into. The ones, those of japanese decent, that are usually at our universities are either because A) they are in some sort of exchange program B) because they moved here and are Americans.
Um, and Japan doesn't stop people of other races from living within their country either.
One poll option is REALLY missing here that is the correct answer to this.
The Japanese, unlike any other nation on the planet, have gone through some really bad catastrophes as a nation and learned long ago to pull together to survive. They are the only ones to get bombed by nuclear bombs.
Combine that with other aspects of their culture, such as a more communal mindset they are raised into, a mindset to do better for the greater good of everyone in their country, and a few other things it is easy to figure out why there is no looting.