Yeah, the equivocation we see is both dangerous and disingenuous.
The state is permitted to do lots of things that, if done by a private citizen would be a crime. They get to take our money, is that theft? They can conscript us, is that slavery? They can imprison us, is that kidnapping, or unlawful detention? They can execute us, is that murder?
No, it isn’t murder. And I say that as someone who passionately opposes the death penalty. The death penalty isn’t murder because murder is a creature of statute, it is a legal term, and it is most simply defined as the unlawful killing of another person. Fetuses being counted as murder victims does muddy the water a bit.
But why is it I think executions are immoral and imprisonment is not? Simple enough.
We accept, every logical person and ideology accepts, that the state has certain powers. A state without power isn’t a state. Imprisonment is an acceptable use of power, it provide protection for society and punishment for those who have done wrong. The concept of punishment is not an immoral one, and religiously it is not anathema to me either, the bible makes it clear punishment as a concept is not morally wrong (obviously to me, that’s my personal religious opinion.)
I don’t likewise oppose executions because I view all killing as wrong, that isn’t true. Killing in self defense is not morally wrong. Killing an enemy combatant in warfare is not morally wrong.
However killing a criminal, I think, is a step too far for the state. The state needs to be restricted to a degree by the people, and I think that morally speaking the people shouldn’t permit a state which itself kills those who are not a direct threat to anyone else. There are other avenues of protecting society and there are other avenues of punishment as well. It isn’t a necessary state function, like imprisonment, and it isn’t the only option that takes care of its stated goals.
Killing a defenseless (or mostly defenseless) person is a moral wrong, imprisoning someone is not, especially when it is apparent that said person is actually a dangerous person, and that only by imprisoning them do we keep them from being dangerous to society.
Just as individuals have a right to self-defense, as should the state, so the state should be able to defend itself from criminals by locking them up. But killing them? That’s a step too far. That’s shooting an intruder after you’ve knocked them out, so to speak.
So yes, executions are morally wrong. But just because one killing is morally wrong doesn’t mean it is equivalent to another killing, or even equally bad. That’s foolish. Most reasonable people recognize different degrees of evil and injustice. There’s a reason hate crimes are punished more harshly. Systematic mass murder is obviously a greater wrong that highly selective judicial killing. Are both wrong? yes. And both involve killing by state actors. But that doesn’t instantly mean they must be equivalent.