In a feminist gathering about 10 years ago, a very wise woman suggested there were parallels between feminism as a movement and some religious movements. Radical Feminists were akin to the "visionaries", the mystics, those who could see the ideal of heaven (i.e. post-patriarchal world,) but were perhaps less focussed on "temporal" matters or how to achieve the ideal. Other feminists were more like the "missionaries," who used that vision of the ideal to convert others to feminist beliefs while taking practical, if small steps towards that ideal.
So with her example, Christian missionaries spread the gospel at the same time as they built schools, houses and clinics for the poor. Feminists of the "missionary" were involved in both consciousness raising and activities like lobbying for changes in the law, getting public funds for domestic violence refuges, fighting for equal pay, etc.
Okay, it's a fairly simplistic analogy, but does illustrate in a way why both strands of feminism are important (and just as there were different denominations of Christian missionaries, there are different strands of feminism like liberal, socialist, anarcha, intersectional, etc.) for the achievement of social justice.