When the modern abortion movement first began, a century ago, Planned Parenthood founder and hero Margaret Sanger was quite clear on her belief in the theory of eugenics. She wanted to reduce the numbers of undesirable people in America (you know, all those “other” races and ethnicities), and abortion was the easiest way that sprung to mind. But it didn’t catch on; it was too extreme. So, when a renewed effort for legalization of abortion really kicked into high gear in the 1960s, it was couched in a mantle of compassion instead. “Since people will get abortions anyway,” we were...