I feel very strongly that treating human lives as disposable because they have not yet developed enough to meet some arbitrary criterion is fundamentally immoral. Seven men decided that there was a fundamental right to privacy which compelled the government to allow the 'termination' of prenatal lives in all 50 states, and as a result I have lived my entire life in a country where the justice system actively promotes injustice. On an intellectual level, I find this to be pretty appalling- but this is an issue which is difficult to view solely from an intellectual perspective. I have to admit that this is a situation that can make me pretty angry. It's an anger which is unwelcome because I think that it is counter-productive. Even 'righteous' anger tends to impair one's ability to be rational and analytical (and I value my rationality just as much as I value my integrity).
At this point, I can only speculate about the man who killed Dr. Tiller, but I suspect that he chose to embrace his anger. I suspect that he nurtured his anger over the injustice of our laws and the taking of innocent lives until he felt that he was justified in becoming a law unto himself. In doing so, he lost whatever moral authority he might previously have had. Abortion is immoral because it permits the arbitrary taking of human life- but if you violate the rule of law and end someone's life because you have personally decided that he deserves to die, then your actions are immoral for precisely the same reason.
I imagine that he was motivated by an anger that many people feel, but that in his case he encouraged that anger until he was no longer fit to live in civilized society. If I'm right, then he is a murderer. Of course, I don't know what he was thinking. There is a possibility that I could be judging him too harshly. It could be that he was mentally ill and lacked the ability to truly understand what he was doing. If that is the case, then in an odd way, he would be a kind of victim of his own crime. There is another possibility that I find very worrisome. He might have acted not out of anger or madness, but with calculation and a wish to intimidate. If that is the case, then he isn't merely a murderer; he is also a terrorist.
-My sympathies to the friends and family of Dr. George Tiller-