In my Philosophy and Society class, we have been discussing an interesting political philosopher named, Emma Goldman.

Like, Firestone, she calls for radical political uprising in order to fix the sexist (among many other) issues of culture. But instead of taking it from a materialist, Marxist perspective, she looks at the issue from an Anarchist's perspective. She thinks that all hierarchal systems are oppressive and inherently carry with them oppressive domination of many different forms, including the oppression of women.

Here's a link about her interesting life: http://en.wikipedia.org/wiki/Emma_Goldman

I couldn't find any essays she has written on women's oppressions specifically. But here is link to an essay to get a feel for her philosophy: http://sunsite.berkeley.edu/goldman/Writings/Anarchism/anarchism.html