Preventing some arbitrary part of the population from having children is basically eradicating that population, long term. I just used "kill", for simplicity.
I find that equation of terms troubling. If I take that argument to its logical conclusion, we are all killers because we don't get as much children as previous generations. We're effectively killing our unborn offspring by refusing to procreate.
https://en.wikipedia.org/wiki/Eugenics