Maybe I got this wrong:
That quote by Michelle Malkin that you posted describing the killing of Tiller as "terrorism" wasn't by Michelle. It was a quote from a post on some other blog and she linked to Google. She didn't call it terrorism. In fact, she was basically pulling the "oh NOW the left uses the word 'terrorism'" card. Just didn't want you giving her credit for something she didn't actually do.
As someone who has always called what the Jihadists do terrorism, could I get a response from Malkin as to whether she believes this Christianist murder is terrorism as well? Imagine an Islamist fanatic had assassinated a pro-Israel rabbi in a synagogue, and had harassed synagogues for years, including one arrest for bomb materials in his car. Imagine if one of his associates had tried to kill the rabbi before. Would there be any question that this was Islamist terror? So why is this not Christianist terror?