Oh, I don't attribute it to racist beliefs. I attribute it to supernatural beliefs, but the racist bit sure helps connect the dots.
I don't regard it as essentially a religious view, though many are motivated by religion.
It is a question about morality, specifically, who counts, morally speaking. One might come to conclude that the fetus counts because of a religious authority, but one might also conclude that the fetus counts for other reasons.
I don't regard a pro-life position as stupid, depending on the reasons for taking that position. I don't think that it is at all obvious that a fetus isn't the sort of thing that has a right to life. In order to determine that it doesn't, we need to ask a deep and hard question: what sorts of beings have such a right?
ETA: Just to be clear, a religious belief is not a good reason to make abortion illegal. We don't restrict the right to free speech so that one can't draw pictures of Mohammed. We shouldn't make abortion illegal because a majority of Alabama have the religious belief that abortion is wrong. That doesn't preclude other reasons for making it illegal, though the current interpretation of the Constitution precludes it. Personally, I never thought the actual reasoning in Roe v. Wade was persuasive, since I don't see how a right to privacy matters unless one determines that a fetus hasn't a right to life (legally, not morally, speaking). That's not to say that I disagree with the consequence, but the reasoning was bumfuzzling to me. It has, admittedly, been years since I read the opinion.
It's no good just saying this thing doesn't because it's just a bunch of cells. It's a bunch of cells that will develop into a thing that has a right to life. How and when does this thing get such a right, if not at conception? Without a decent answer to that question, dismissing abortion as obviously not like murder is unpersuasive. Saying that it's okay for the first two trimesters but not the third except in certain cases requires some argument why the first two trimesters are different than the third and why the third is different than immediately after birth.