And also, for some reason it really bothers me that he was killed *in his church*. I'm not sure why, I don't even go to church

You may not go to church, but "pro-life" partisans disproportionately do, and we know enough about the minds of more typical non-evil devout churchgoers to suspect, or hope, that the specialness of a church would be a relevant factor for them. Beyond the evil of the murder itself, there's a very special form of hypocrisy in the ability to juxtapose the idea of the "sanctity of life" and assassinating someone at church. Folks, that's not what "sanctity" means.