A Polish woman carrying two fetuses needed an abortion to save her life, because one of them had died. The other fetus still lived, and doctors feared prosecution if they aborted the dead one, so they waited. The other fetus died, and they did the abortion, but during that time her condition had deteriorated, leading to her death.

Now her death has become a cause to mobilize Polish women for abortion rights.

I've read that the Catholic Church initially decided to oppose abortion, in the 19th century, on the grounds that the fetus might be male, and males (even mere fetuses) were of higher value than any female.