I have several female friends who have been very political about this on facebook for years. But facebook is just one venue for them.

They make this point everywhere, in parks, at work, at the coffeehouse. The point is to make breastfeeding natural. And when you realize that it's not (and it doesn't matter whether it's a well-dressed VP or an MFA student, it is clearly socially unacceptable, or at least uncomfortable, to breast feed in public) - when you realize that feeding our children should be the most natural thing in the world, and it isn't, you can appreciate the militancy with which they fight to make it a common occurrence for the rest of us: like showing up in your news feed.