My favorite feminist is the former Director of the L.A. chapter of NOW, Tammy Bruce, because she breaks the mold. She is openly gay, pro-choice, gun-owning, pro-death penalty, and voted for President Bush! I may not always agree with her but I love her spunk. You can't type someone like that in stereo.
Recently I heard her speak at Florida State University about some of her experiences as a NOW Director and progressive feminist with a conservative bent. One of the things she noticed was how colleagues in the pro-choice movement would react win she or someone else within the ranks would question or consider a new perspective outside the party-line. There were a lot of black-and-white thinkers who could not handle alternate perspectives and would question a member's loyalty if they deviated. A kind of group-think mentality developed where one was afraid to differ or disagree.
I have seen this same attitude in many churches and in evangelicalism. There is a general understanding that one must hold to certain views, beliefs, doctrines, perspectives, and political thought. I'm not saying a group shouldn't have core values and beliefs they share. But the black-and-white mentality can take over a group so that the gray areas are forced to go black or white. If it goes too far it becomes very unhealthy. A person can lose their individualism as they are consumed with fitting into a fellowship, avoiding conflict (which is not always unhealthy), and sacrifice their own personhood on the alter of group-think. Independent thinkers can't handle this, which is probably why Ms. Bruce left NOW and is who she is today.
The key I suppose is striking a balance between sharing a broad set of core values or principles and welcoming independent thought--not always an easy thing to do but well worth the effort.