Japan has a reputation of being a homogeneous, mostly harmonious society. There are few foreigners, linguistic differences are rare and on the surface class distinctions are largely absent. But, as Mike Sunda discovered, there is one, often hidden, exception: Japan's untouchables. In the corner of a pristine room tucked away in Tokyo's Shibaura meat market is a table topped with a stack of crudely composed hate mail - evidence of a prejudice that dates back to medieval times. Read more
