Abortion.
It is not murder (generally). Not in the US anyways. What does this mean for us? As long as the abortion is carried out legally, it is not murder. Unless you're a Christian. Then, I'm pretty much universally sure, it is against God's law. Meaning it's unlawful. Meaning it's murder.
From a religious point of view, pretty much any religion, it is wrong. A fundamental part of every religion I've ever seen is the spreading of it. One sure way to spread a religion is for its members to procreate. Since abortion prevents procreation, I'm pretty much sure any religion will be against it.
From an atheistic point of view, what difference does it make? Our whole existence is meaningless, so who cares if a fetus is murdered? (that should raise a few brows)
From a moral point of view, it all depends on the situation. If abortion is being used as a form of birth control, then most would be morally opposed to it. This is where most the debating usually happens. Is it moral? Is it moral to take a life so that mine is more convenient? No. Is it taking a life? Well, now, that's a pickle of a question, isn't it? Until there is consensus on this point, the moral question really can't be addressed appropriately. Life either begins before conception, at conception, between conception and birth, at birth, or after birth. We can pretty much all agree that neither before conception nor after birth are worth consideration. Most will agree that "at birth" would also not be valid, since you can cut the mother open before birth, remove the baby, and it will still survive on it's own. Most would also concede that at conception is too soon - otherwise most of the women on birth control pills are having abortions every month. So that leaves us with between conception and birth. That's a big gray area, and I don't really have a strong opinion on where in that range I would say that life begins. If you put a gun to my head and made me choose - a month ago I would have said that it is when the baby can be removed from the mother and survive. But after spending about an hour yesterday watching my sister's daughter on the ultrasound machine, I think now I'd have to say I'm not smart enough to make that decision. So why don't we just leave it at uterine attachment.
Practically, abortion makes sense. It makes sense if the mother's life is in danger, because her life is more important for the good of the species. She is of child bearing age (obviously). If she is sacraficed to save the baby, the baby won't be able to contribute to population growth until it reaches child bearing age, while the mother could do so relatively immediately.