“The most merciful thing that a family does to one of its infant members is to kill it.” Margaret Sanger (editor). The Woman Rebel, Volume I, Number 1. Reprinted in Woman and the New Race. New York: Brentanos Publishers, 1922.
Would that be preemptive or retro-emptive?
Read it in context of the paper that phrase was written in. She is not advocating abortion.