See: http://www.washingtonpost.com/blogs/worldviews/wp/2013/02/22/american-teacher-in-japan-under-fire-for-lessons-on-japans-history-of-discrimination/
or http://tinyurl.com/asj8kzk

Quite interesting article about a nisei English teacher, a
course he taught in Japan, and the reaction of the ネトウヨ.

Jim