The Kingdom movement was the name used by US Christians in the 1890s who wished to carry out improvements in society.
An early national figure in the Social Gospel movement was Washington Gladden, the minister of a Congregational Church in Columbus, Ohio, in 1882.
A few years later, another Congregationalist minister, George D. Herron, travelled around the US giving a sermon on "The Message of Jesus for Men of Wealth," a condemnation of wealth and its acquisition.
He argued that capitalism was based on the sinfulness of human greed and self-interest.
[1] The term "Social Gospel" did not come into common use until the twentieth century.