I'm not comparing them, I am equating them. A fetus is a human baby, end if story. There is nothing mystical or magical that happens during the birthing process that suddenly turns a fetus into a human being with rights and liberties. It has always been a human being and will continue to be until and unless violence…

I don't think "when life begins" is a question science has answered (or possibly can ever answer). Different people define "life" very differently, especially if they subscribe to dualism. (Douglas Hofstadter explores this issue very emotionally and charmingly in I Am A Strange Loop.)