You could call it murder if they were human. But they're not. They're fetuses. That they will eventually become human means nothing. The point is that as a fetus, they're not. I say that if the choice is between aborting all fetuses or none at all, then abort them all! At worst, it would be a mercy killing. So what is wrong with mercy. Also, there are over 7 billion people on the planet. That is about 4 billion more than our planet can support.
On that point, have you ever heard the word "Unsustainable?" It is used often enough when referring to various things that are happening. But do you even know what they are saying when they say "unsustainable?" It doesn't mean that things can't continue getting ever worse as they are. It means that right as things are now, it is unsustainable. You can imagine what things continuing to get increasingly bad will mean. Who would condemn anybody to live in such a world. A self centered asshole I would say.
Here is another point. Humans are incredibly evil. A paradox with that is that they can do good and still be evil. Most humans are also incredibly stupid. I know. I have talked to enough of them at various forums to find that out. Also who in the hell are these assholes to want to force others to be born. Maybe they lived a good life and want to see others do so. But just because they have doesn't mean that others will. Or maybe they want to keep a good supply of slaves coming. George Carlin had some interesting points on those people. I'll show it to you.
Also, luckily for you human caused global warming will probably kill off most of the life on Earth in about 30 years. But even if it were otherwise, I will show you a parable of what future life those in charge have in store for humanity. Imagine the creatures you see as humans. Before the inevitable massive die off. Along with the incredible suffering that would go along with it. I will show it in a reply.