Abortion is nothing more than the current, modern iteration of one more Democrat - especially "Progressive" democrat - policy of infamy - Eugenics.
Margaret Sanger, the founder of the organization that eventually became Planned Parenthood, was a rabid racist ("raceologist" they called themselves back then) and made no bones about the reasons she advocated Eugenic sterilizations and widespread birth control; to control and reduce the population and reproduction of "unfit races", especially blacks. Looking at the abortion statistics today, her program is succeeding far beyond her wildest expectations. For about 18% of the American population, blacks account for 37% of abortions performed in America. Getting down to specific states, the number gets even larger: in Mississippi, for example, black women have over 70% of the abortions in that state. Overall, better than 56% of all black pregnancies end in abortion.
(data extracted from Liberal Fascism by Jonah Goldberg)