From the beginnings of the 19th century feminist movement, activists challenged the presumed right of men to engage in forced or coerced sex with their wives. In the United States, "the nineteenth-century woman's rights movement fought against a husband's right to control marital intercourse in a campaign that was remarkably developed, prolific, and insistent, given nineteenth-century taboos against the public mention of sex or sexuality." Suffragists including Elizabeth Cady Stanton and Lucy Stone "singled out a woman's right to control marital intercourse as the core component of equality."