Abortion
Human life must be respected and protected absolutely from the moment of conception.
From the first moment of his existence, a human being must be recognized as having the rights of a person - among which is the inviolable right of every innocent being to life.
Before I formed you in the womb I knew you, and before you were born I consecrated you.
My frame was not hidden from you, when I was being made in secret, intricately wrought in the depths of the earth.
Source: Catechism of the Catholic Church (Vatican.va)