Farida Iqbal has published an excellent article on Ms Semenya in Green Left and Links.org.au:
The ostracism of Semenya doesn’t just affect intersex people. Gays, lesbians, bisexuals and transgender people are affected too. Semenya’s ostracism reinforces the rigid notion of binary gender, a notion that excludes all of us. In Australia, we have a particular responsibility to defend Semenya because it was the Australian media that led the world in ostracising her.
This is also a feminist issue. The incredible scrutiny under which women athletes perform, the media commentary about their supposed “masculine” bodies, and the pressure put on them to assert their “femininity” — by say, posing nude in men’s magazine’s — has nothing to do with their strength as athletes. It is related to society’s commodification and sexualisation of women’s bodies, and its unwillingness to recognise diversity.