this documentary exposes and shows the need for God to be the center of the abortion debate,
It's difficult to say that God should be the "center" of a debate when one of the sides either completely rejects God or at least completely rejects the other side's understanding of Him. I really don't even believe that talk of "God" belongs in the debate.
We anti-abortion folks (and no one is more anti-abortion than I) can certainly believe that God is aghast at the abortion holocaust and that vigorously opposing abortion is doing His will, but this is an internal matter - our motivation for doing what we do to oppose abortion. It's almost entirely irrelevant to the other side and thus to the debate itself.
Likewise, calling the fetus a "baby," an "unborn child" or a "person" is also largely irrelevant and (I believe) unduly inflammatory. Everyone knows that it is, at a minimum and from the moment of conception, an incipient human being. It isn't a gallbladder or a wisdom tooth.
The anti-abortion argument (I believe) has to focus on arguments that at least are within the worldly frame of reference of the pro-abortion folks. Things like "viability" now being much earlier than when Roe v. Wade was decided; the devastating psychological effects on women who choose abortion; the unfairness of abortion to the incipient human being when there are so many alternatives to becoming pregnant in the first place; the availability of adoption, etc.
I've never been completely sure what the pro-abortion movement was really about. With so many alternatives to becoming pregnant in the first place, and even much less grisly alternatives to terminating a pregnancy than a mid- or late-term abortion, it's always struck me as unlikely that so many women were actually all that concerned about preserving the availability of abortion. It seems to me that "abortion" is really just a code word for the angry feminist notion that no man (even the father of the child) is going to tell ME what I can do with MY body or any other aspect of MY life. If this is the case, any reasoned argument against abortion is likely to fall on deaf ears.
The "God" and "baby murder" arguments against abortion seem to me counterproductive, in the sense of making it easier for the pro-abortion forces to dismiss anti-abortionists as shrieking "religious cranks" who are out of touch with modern values.
If I had no religious beliefs at all, it seems to me that I'd be almost as aghast as I am now at the notion of a supposedly civilized society thinking it was OK to rip tens of millions of incipient human beings from the womb as though they were gallbladders and had no dignity or worth at all. It strikes me as something we might have been more likely to expect from the ancient Aztecs or Mayans. I'm not sure how to communicate this sense of horror to those who regard an abortion as little more than a tonsillectomy and as representative of a larger feminist agenda, but I'm pretty sure that talking about God isn't an effective way to do it.