While this theory can be applied to all people, and more particularly all women, it is specifically mentioned and studied within the realms of black feminism. Patricia Hill Collins argues that black women in particular, have a unique perspective on the oppression of the world as unlike white women, they face both racial and gender oppression simultaneously, among other factors. This debate raises the issue of understanding the oppressive lives of women that are not only shaped by gender alone but by other elements such as racism, classism, ageism, heterosexism, ableism etc.