Feminist communication theorists are also concerned with attempting to explain the methods used by those with power to prohibit women like Maria W. Stewart, Sarah Moore Grimké, and Angelina Grimké, and more recently, Ella Baker and Anita Hill, from achieving a voice in political discourse and consequently being driven from the public sphere. Theorists in this vein are also interested in the unique and significant techniques of communication employed by these women and others like them to surmount some of the oppression they experienced.[85]