Fetus Viable At 25 Weeks

To me, the main question in this debate is at what point in time does a fetus become a person protected under the law? Unless a fetus can survive on it's own, medically considered to be after about 25 weeks, it cannot be a person, and as such, cannot be murdered. Until a fetus can survive on it's own outside of the womb, it should be considered as merely a group of cells that are part of a woman's body. It is attached to a woman's body, fed by the woman's body and supported by the woman's body, much like any other organs in the a woman's body. Without the connection to the woman, a fetus cannot exist, so how can it be a human being?

Nevertheless, here is a good question for anti-abortionists: If a woman gets an abortion by a doctor, it is considered murder. However, if she spontaneously aborts at the same time, it isn't murder. Why? If, according to anti-abortionists, the fetus is a living, breathing human at that time, why should it matter how the fetus died? A better question would be, "If a miscarriage isn't murder when the fetus is expelled by the mother, then why is a miscarriage murder if the expulsion is facilitated by a doctor at the mother's request?

-K.J.