The appropriate term is "Hero"

On Dr. George Tiller from Balloon Juice:

Conjoined twins alone is not what was so difficult but the way they were joined meant that at best only one child would survive the surgery to separate them and the survivor would more than likely live a brief and painful life filled with surgery and organ transplants. We were advised that our options were to deliver into the world a child who’s life would be filled with horrible pain and suffering or fly out to Wichita Kansas and to terminate the pregnancy under the direction of Dr. George Tiller.

We made an informed decision to go to Kansas. One can only imagine the pain borne by a woman who happily carries a child for 8 months only to find out near the end of term that the children were not to be and that she had to make the decision to terminate the pregnancy and go against everything she had been taught to believe was right. This was what my wife had to do. Dr. Tiller is a true American hero. The nightmare of our decision and the aftermath was only made bearable by the warmth and compassion of Dr. Tiller and his remarkable staff. Dr. Tiller understood that this decision was the most difficult thing that a woman could ever decide and he took the time to educate us and guide us along with the other two couples who at the time were being forced to make the same decision after discovering that they too were carrying children impacted by horrible fetal anomalies. I could describe in great detail the procedures and the pain and suffering that everyone is subjected to in these situations. However, that is not the point of the post. We can all imagine that this is not something that we would wish on anyone. The point is that the pain and suffering were only mitigated by the compassion and competence of Dr. George Tiller and his staff. We are all diminished today for a host of reasons but most of all because a man of great compassion and courage has been lost to the world.

Operation Rescue is a terrorist enabling group, Randall Terry is a terrorist, plain and simple.

"We grieve for him that he did not have time to properly prepare his soul to face God."

Not sad he was assassinated, just sad he wasn't executed. Compare his statement to the statements of al-Zawahiri and tell me the actual difference in character?