のりこえねっと / Norikoeru Net (We Shall Overcome) An anti-hate speech group formed quite recently in Japan
The International Movement Against All Forms of Discrimination and Racism (IMADR) (in Japanese here) - Japanese organization campaigning against discrimination against Buraku, Korean and other minorities in Japan, for gender equality , and against discrimination internationally.
People's Front of Anti-Racism (in Japanese) A Japanese organization campaigning against racism and hate speech
Counter Racist Action Collective (in Japanese) A Japanese group that takes direct action against racist groups and demonstrations