Radical feminism
In 1979 The Transsexual Empire: The Making of the She-Male, a book by a radical feminist called Janice Raymond, was published. In the book Raymond said that trans women all "rape women's bodies by reducing the real female form to an artifact, appropriating this body for themselves."  The RadFem2012 conference would not let in transgender women. Radical feminists may call themselves 'transcritical' or 'gender-critical'.