Check out this awesome post in which tigtog calls out TERFs, or trans-exclusionary radfems, (thanks for this term, tigtog!) for scapegoating transwomen:
Of course transnsgender behaviours are an exercise in artificiality - but is it fundamentally any more artificial than cisgender behaviours? If reifying gender by dressing so very femininely is so fundamentally awful, then why so much criticism reserved mainly for the transwomen who do so, and so little criticism by comparison for all the ciswomen who embrace all the rituals and accessorised impedimenta of femininity?Seriously, go read the whole thing. She does such a wonderful job of summarizing and deconstructing some of the most common arguments radical feminists make for excluding transwomen from feminist events and pursuits. Some interesting discussion is going on in the comments section there as well.
I have to admit that when I was new to feminism (or feminist theory, anyway), I identifited first and foremost with a radical point of view. Why work within the current system for change when the system is the problem and should be overthrown completely? Liberal feminism felt like feminism-lite after being inspired by the revolutionary ideas of Firestone, Greer, Dworkin and the like. But despite embracing some radical ideas, it got harder and harder for me to get behind radical feminism entirely as it became more and more apparent how often many (though not all) radical feminists rely not just on criticizing cultural systems, but on judging and shaming women (both trans and cis) for the various ways in which they operate within those systems. And I just can't get behind that.
While it is fine for feminists to spend time describing patriarchal society and theorizing alternatives, it just doesn't make sense to do this without recognizing that, in this reality, all women must bargain with patriarchy in different ways and to different degrees just to get by. My feminism does not allow for judging or shaming women for the ways in which they bargain.
You can criticize transwomen, sex-workers, sex-positives, religious women, married women, heterosexual women, and/or women from other cultures all you like, but if you ask me, it doesn't make you MORE of a feminist than the rest of us -- it actually makes you pretty UN-feminist.
(See also: Womanist Musings - Radical Feminsm And CIS Privilege)