[1][2] The articles of incorporation defined the Society's purpose as to form an association where "people without regard to theological differences may unite for mutual helpfulness in intellectual, moral, and religious culture, and humane work.
Simmons was a vocal opponent of the U.S. invasion of the Philippines and the congregation was instrumental in convincing the state of Minnesota to withdraw its troops from the war.
The Women's Alliance of the congregation funded a free delivery room for unwed mothers at the Maternity Hospital of physician and social reformer Martha Ripley.
Two congregants, Maud Conkey Stockwell and Clara Ueland, served as president of the Minnesota Woman Suffrage Association from 1901-1919.
After voting rights had been achieved, the organization became the Minnesota League of Women Voters, with Clara Ueland as its first president.
Lecturers included Clarence Darrow, John Haynes Holmes, Minnesota Governor Floyd B. Olson, and Louis Brandeis.
[9] In 1917, Dietrich met Curtis W. Reese, another midwestern Unitarian minister who was advancing similar humanistic ideals.
[10] In 1929, the Society's Women's Alliance formed the American Birth Control League after sponsoring a lecture by Margaret Sanger.
From 1966 through 1978, the Society's minister, Robert Lehman, offered draft counseling and facilitated support groups for gay men.