Start by a moratorium on the execution of innocent unborn children.
I used to work with a liberal that vehemently opposed capital punishment but was “pro-choice”. He also claimed to be Christian. I asked him to explain to me how it is OK to kill an innocent child but not OK to kill a convicted murderer.
He never did come up with a good answer, especially because he was Christian the claim that the fetus isn’t a child didn’t fly.