George Tiller did not have to die. He was assassinated while in church in Wichita, Kan., on Sunday, targeted for legally performing abortions. His death might have been prevented simply through enforcement of existing laws. His alleged killer was seen vandalizing a Kansas City clinic, Aid for Women, both the week before and the day before the murder, putting glue into its door locks. The manager of that clinic, who calls himself "Jeff Pederson" to protect his identity, told me he called the FBI and local police both times, but the vandal, the alleged killer Scott Roeder, was not arrested. Pederson had Roeder's first name and his license-plate number. He had images of him on the security video. He recognized him from previous protests.