Ratification CERD: acceded in 1996.

Extracts from state reply to Durban Review questionnaire:
The government has continued to promote human rights education and numerous activities to enlighten people on human rights protection. The Constitution of Japan stipulates that all people are equal under the law.

Link to the full document:
http://www2.ohchr.org/english/issues/racism/DurbanReview/docs/session1/MemberStates/Japan.pdf