The murder over the weekend of Dr. George Tiller, one of a handful of physicians who performed late-term abortion, is an absolute tragedy. As Kristen wrote yesterday, many are in mourning and angry over this disgusting and hate-filled act. This was an act of political aggression against a doctor who helped people who were in absolutely desperate circumstances: Anti-choice activists often cast late-term abortions as the murder of a viable baby at the whim of a woman who doesn't wish to be inconvenienced, carried out by a doctor who looks at her and sees only cartoon dollar signs. They're egged...