I challenge you to find a single person arguing in favor of making murder legal. I’ve never seen or heard anyone do that.
I think it can be needed sometimes throughout history when the inequality between rich and poor becomes too great, that doesn’t mean I think it should be legal…
So that does in fact mean you’d prefer a country where slaves are still legal, because it took quite a lot of murder before slavery was made illegal in the US.
I think you have a very childish point of view.