Not sure if it would fit best in fantasy or scifi, though; I favor fantasy, but….
No analogy is perfect, but ponder a reverse situation involving only two issues new pro-lifers and/or whole-lifers might deal with; immigration and abortion …Suppose abortion was never made legal in the U.S., but those women who would have had an abortion deported their newborns to orphanages in other countries instead; and this type of deportation was perfectly legal. I’m talking about deporting these babies to poor 3rd world countries that didn’t really want them either, but the babies will be alive and cared for to an extent, but their future well-being would be uncertain.
At the same time suppose immigration to the U.S. was always unlimited (open borders), but around 1973 all immigrants were declared non-persons by SCOTUS with no protection under the law. This meant that if legal immigrants happened to be on or cross over your property, you could kill them as a personal choice; a choice between you and your local law enforcement officials.
Now imagine these legal baby deportations totaled about 250,000/year in recent years and these legal immigrant murders were about 750,000/year. I’m sorry, but the 750k immigrant slaughter would be what cries to heaven for vengeance.
Rest of the article is at TAC; it’s about the so-called “new pro-life movement.”