My point is that they're both life, although there are certainly death row convicts murdered by the state who end up being exonerated by DNA evidence after the fact. That's the killing of innocent life, unless you want to define "innocent" based on what the courts decide. In that case everyone is innocent until the courts say otherwise, even if you personally witness them committing a crime.
In any case, the moment you start qualifying what life you're for, you introduce nuance into the conversation that can't be communicated with 2-word slogans. Which is good! It just means 2-word slogans are inadequate for conversations about this topic.