Safe, legal and rare. Just my opinion.
You cannot build specific exceptions into a law, because no list is going to cover every circumstance. Keep the government out of it. They are already intrusive enough in people's lives. There is no need for more.
As far as the murder angle, it depends on when you consider the fetus to be human. Is it a living entity? Yup. Is is human, debatable. Is abortion killing a living thing? Yup. Is it murder (killing a human being is my definition, legal definition may be different)? Depends on your definition of "human." Personally, I do not know enough to make the determination of when it is human. Maybe when the heart takes its first beat?