Buddhism teaches that life actually starts before conception, so killing a fetus even before it takes a single breath must obviously be a horrifying Karmic act.
However, there are also other tragedies in life like murder and suicide. These tragedies will never end until all people finally learn the true value of life and the reason why they have to stay alive no matter how hard it is.
I think this is why Buddhism emphasizes sharing its teachings without pushing a judgmental or political stance. Once people understand the true value of each human life, they will find the answer for this question by themselves.