Say "killing" then -- and allow for inevitable rhetorical excesses.
As I said, it's not my position and I'm not really familiar with the rhetorical nuances, but objections to capital punishment are certainly something that Williamson should have been aware of.
I don’t he is unfamiliar with the idea that some people don’t believe capital punishment should be used.
He believes abortion is murder, and that the appropriate punishment for murder is execution, and carries these two beliefs to their logical conclusion.