Gunned down at church, for being an abortion provider. Yes, it isn't pretty, it isn't easy, but millions of women would find their lives blown completely off course, if they couldn't end unwanted pregnancies. Morality would preclude abortion if a fetus really were morally like a baby, but I don't think so, and millions of women don't think so, and Dr. Tiller didn't think so.
Apparently he was particularly controversial because he performed late-term abortions, but we shouldn't give abortion opponents control of what that looks like. A friend of mine had such terrible hyperemesis (vomiting during pregnancy) that she nearly had to end the pregnancy in the last trimester, to save her own life. That's at least one sort of case that should come to mind when we talk about "late-term abortion."
Dr. Tiller could have been a safe and respectable ob-gyn, but chose a hard calling. I bet there are thousands of women today who feel indebted to him, thankful, and bereaved. Symbolically, anyway, I am one of them.