Why argue against positions that don't exist? I guess you are trying to make the right look silly by arguing against a nonsense position, but it just makes it seem like you don't understand the issue.
A baby, before birth and after birth, has a full set of human DNA which is unique and different from the mother's DNA. Nothing changes for the baby at birth except for location and the means of nourishment. If it is a unique human after birth, it is a unique human before birth. Biological science is clear on this.
A pro-abortion person must either deny science, or deny basic human rights (which I think is where the Nazi thing came in, since they made that one of their specialties...asserting that a group of humans didn't have a right to continue living).