A liberal could explain it but has to lie about it because the public wouldn't accept the truth.  The eugenics movement whose goal is to limit the number of undesireables a.k.a. black and brown births, uses the well worn "women's rights to choose",  "planned parenthood" and " women's health" to mask their real intent.  Couple that with the very profitable baby parts swap meet they run and it's simple to see why they can't be honest.