> And if not for our medical system people with Down syndrome would die to natural selection.
I guess I don't understand your comment; what does natural selection have to do with it?
I'm making no statements here except that the abortion of Down-positive children is in fact eugenics. Parent's comment was asking specifically how abortion is "mass eugenics." Maybe saying abortion in toto is "mass eugenics" is overly broad, but certainly it's used for eugenic purposes--Down Syndrome being one such case.