In order for you to write your second sentence, you must go along with the fundamental premise behind RvW and behind Dred Scott: that humans have the right to decide which products of human conception are human, and which are not.
This is a binary choice: Either they do, or they don't.
If they do, then they do. You will argue that you have controls and limits; I will (a) ask you on what basis you are putting artificial controls in place (because if humans have the right, any limit is artificial), and (b) point out that with a suitable manipulation campaign I can do away with any control you put in place. It's already been done both here and elsewhere.
If they don't, then they don't, and the mass murderers were wrong.