On November 21, 1922, Rebecca Ann Latimer Felton became the first woman to serve in the US Senate. She was a noted campaigner for women's suffrage, but also a former slave owner. An unapologetic white supremacist, she saw suffrage for white women as an important way to bolster the power of the white race.
None of this is a criticism of women's suffrage but simply a reminder that there can be strange bedfellows in politics: progressive and regressive can be combined.