This organization is the largest ultra-leftist radical group in Japan. They have a political arm as well as a small military wing called Kansai Revolutionary Army. The group originated from the fragmentation of the Japanese Communist Party in 1957. Their aim is to protest against Japan’s imperial system, Western imperialism and events such as the Gulf War and the expansion of Tokyo’s Narita airport. They have also attacked a US military base. They have about 3,500 members in Japan. They finance their activities with membership dues, sales of newspapers and fundraising campaigns.

Activities
The organization's members participate in mass protest demonstrations and snake-dancing in streets. In the past year they supported farmers' protest of construction of Narita airport, among other causes. The majority of their activities have targeted property rather than people.They sabotaged part of Japanese railroad system in 1985 and 1986. The've carried out sporadic attacks designed to cause property damage through use of crude rockets and incendiary devices. Several attack targeted American facilities, including small-scale rocket attempts against US military and diplomatic targets; no US casualties so far. The organization has not recently engaged in terrorist activity. They operate only in Japan.