Carrie Katherine "Kate" Richards O'Hare was an American Socialist Party activist, editor, and orator best known for her controversial imprisonment during World War I.

The Socialist Party of Oklahoma was a semi-autonomous affiliate of the Socialist Party of America located in the Southwestern state of Oklahoma. One of the last states admitted to the Union, the area later incorporated into Oklahoma had been previously used for reservations to which indigenous Native American populations were deported, with the area formally divided after 1890 into two entities — an "Oklahoma Territory" in the West and an "Indian Territory" in the East.