Nakamura participated in
sit-ins at the
Kadena Air Base in opposition to the continued military presence in Okinawa. Although the island was jointly governed by the local
Ryukyuan Government and the
US Civil Administration, the Americans had final authority, which the native population found unacceptable. Nakamura believed, according to scholar Miyume Tanji, that school teachers were prominent leaders in the anti-war and anti-military-base movements, because they regretted having encouraged and promoted students to die for the country. The US Civil Administration finally reverted to Japanese sovereignty in 1972. Conditions on the island did not improve, and Okinawans found themselves at odds with investors and administrators from the mainland, who had different visions for development than the local population. Even after the island was returned to Japanese rule, American military bases remained. Nakamura continued to protest their presence as an anti-war and anti-militarization activist. After her retirement, Nakamura became the vice president of the Okinawa Women's Association, an affiliate of the Japanese Women's Association. She participated in a 1983 conference for the parent organization in which official support was given to the Okinawan Historical Film Society for a campaign to have survivors of the war speak of their experiences. Because most people were only knowledgeable about what happened in
Hiroshima and Nagasaki, Nakamura thought that it was important to bring global awareness to "what happened here" on Okinawa. Exchange students who had studied in the US, and members of the Naha City Workers' Union and Okinawa Teachers Union initially founded the Historical Film Society, with the hope of using archival film footage for educational purposes. In 1986, Nakamura became the director of the Okinawan Historical Film Society, and the secretary general of the (One-Foot Movement Association). The One-Foot Association was formed on 8 December 1983, to commemorate the day that the
United States declared war on Japan. The name of the organization was a reference to their goal to have Okinawans purchase one foot of film, from the
National Archives and Records Administration of the United States to educate people about the
Battle of Okinawa. It was inspired by the (Ten-Feet Movement Association) in
Hiroshima, which also bought US film footage. The association bought its first unedited film without sound in 1984. They showed it to an audience at the Naha Citizens' Hall to a packed house. The first edited version (
The Battle of Okinawa: Testimony for the Future) was completed and began touring the country in 1986. Reviews were positive and purchases of the film exceeded all expectations. In 1988, an English-language version was produced and began distribution as far away as North and South America. In 1995 the association released a second film to mark the 50th anniversary of the end of
World War II. (
Document: The Battle of Okinawa) also received good reviews. Nakamura toured with the film internationally advocating for peace. When the
war on terror was initiated in the twenty-first century and Japan began to expand its role militarily, contemplating turning the
Japan Self-Defense Forces into a "full-fledged military", Nakamura protested the idea. She remained active in the peace movement well into her 90s. She also supported the revival of Okinawan culture which began to occur after the war. The mainland policy of assimilation, which had been in place since the
Meiji era, was dropped and art, music, and the local Okinawan dialect began to be revived. Nakamura said that young Okinawans had developed pride in their heritage and a confidence to express themselves. She valued their ability to express themselves freely, because she had lived in a time where freedom of speech did not exist. ==Death and legacy==