Looks to me like voluntary manslaughter is the appropriate charge. If the prosecutor doesn’t include voluntary manslaughter as a lesser alternative, s/he is likely to not get a conviction on a second degree murder and then the guy could walk, which I don’t think would be such a bad result.
Prosecutor will have to be very careful on this one since the pro-aborts will want second degree murder to be the charge without the alternative of voluntary manslaughter. Over reaching could benefit the defendant.
I just don't think it's reasonable to believe that an attorney could successful prove his client "was in fear for his life", or that "other circumstances existed that justified deadly force", when that same client gunned down a presumably unarmed and certainly older man who was acting as an usher during Sunday morning worship services.
You can't shoot a man in cold blood for doing something that is legal, no matter how reprehensible that "something" is, in this case late term abortion. As a matter of criminal law, this shooter will probably receive a lengthy sentence provided that he's indeed guilty and his subsequently convicted.