Deeply affected by her experiences in the camp and the United States' use of atomic bombs to end World War II in Japan, Hasegawa joined the Women's International League for Peace and Freedom. During the 1960s she moved with her family to Richmond and joined the staff of the Virginia Office on Aging. She sat on the board of the Richmond Human Relations Council and was a founding member of the Richmond Peace Education Center. Through speaking engagements around the country, the soft-spoken Hasegawa shared her belief that freedom and social justice were necessary to achieve world peace. She served as president of WILPF's U.S. section (1971–1975) and was part of an international delegation of women who visited North Vietnam in 1973. In 1996 the Niwano Peace Foundation awarded Hasegawa its Peace Prize for her work in promoting peace and human rights worldwide. A documentary about her life, Marii Hasegawa: Gentle Woman of a Dangerous Kind, premiered in 2012.
Reprinted by permission of the Library of Virginia.