http://www.marxists.org/reference/subject/philosophy/works/us/nichols2.htm
We can further understand such differences by looking more extensively at that political position known as radical feminism. In part, radical feminism was created by women who had been active in NOW and were dissatisfied with what they perceived of as NOW's conservatism. Thus in 1967 at the annual meeting of NOW subsequent to the one in which the above demands were formulated, a group of New York women allied with Ti-Grace Atkinson left NOW and subsequently formed an early radical feminist organisation, "The October 17th Movement," later called "The Feminists.'' Radical feminism was to a large extent also constituted by women whose previous political activity had been in the diverse organisations of the New Left. This was the case, for example, with such women as Shulamith Firestone and Jo Freeman, who founded an early radical feminist organisation, Radical Women, in New York City in the fall of 1967. These two women, with others, had earlier presented a series of women's demands to a New Left conference, the National Conference for a New Politics, in the spring of that year. None of the demands were taken seriously, causing them to begin thinking about the necessity of separate women's organisations outside existing groups.
The early organisers of radical feminism shared with the rest of the New Left a belief in the systemic nature of much of political injustice. Thus when these women began to perceive the situation of women as representing a case of this injustice, they employed the adjective "radical" to describe their stance. It signified a commitment to look for root causes. Radical feminists viewed the activities of women who had been involved in NOW or other existing business and professional women's organisations as "reformist," helpful and necessary but fundamentally inconsequential. This view stemmed both from a belief that the criticisms liberal feminism