@Zee: In light of the slew of anti-abortion legislations sweeping through the United States it is indeed going to be tough for the gender rights movement to take a stand on this matter, especially since abortion is still the most popular method of sex selection worldwide and in the US.

Perhaps the way forward, as Jesudasan says, begins with acknowledging that gender discrimination exists and discouraging sex selective practices while also protecting women's right to reproductive self-determination. However, as she herself admits, this "not an easy position for the reproductive rights movement and for the most part, most people, to understand or engage in."

@Zee: This is indeed a deep-rooted problem in not just Indian, but several other societies across the world. It’s a practice that cuts across cultures and religions. The United Nations Commission on Human Rights has reports of such killings from Bangladesh, Morocco, Turkey, Uganda, Egypt, Pakistan, Jordan, Brazil, Italy, and Great Britain, to name a few.
I think this issue, as with most human rights violations, has to be addressed both from within – by pressuring governments to enact laws to protect their citizen’s right to life and educating the public about human and women’s rights, as well as from without - by bringing international attention to it.
As an Amnesty International official once said: “Change can’t happen if it’s just people working inside the system; they’re overwhelmed. International campaigns and media attention give them some ballast and the ability to say, ‘Look, the world is watching what is going on here,’ and provides support for making change in their own countries.”