There really aren't that many people who agree with you on this. The vast majority of americans believe an unborn child in the last trimester is a human being ("Have you felt your baby kick? How's your baby doing") and while they won't legally stand in the way of a person killing that child, they find it disturbing that they would.
It's a complete 'being' and it's completely genetically 'human'. Emergency births have occurred as early as 26 weeks resulting in live babies.