Thanks for your reply, Pachipro. Actually your idea of contacting the UN's Human Rights Body has caught my attention. I am probably not going to work for them, but we could write a letter explaining the problems.

The main issue is "discrimination toward foreigners due to the government's education system that teach all the Japanese that Japan is unique (in a superior way) and that it (often unconsciously) affects the behaviour of the Japanese in a negative way toward foreigners, so that they keep asking the same "government-inculcated" prejudiced questions that can be offending to foreign residents. That will be difficult to be taken seriously when they have to deal with torture and genocides in other countries, so I should add all the discrimination problems related to the police, admission to onsen/hotels/apartements, etc.

Shall we make a petition so as to have more influence when we submit it to the UN ?