As I said, if they have a crumb of empathy, you can work from there and apply logic. You find something you both agree on, and then expand from there and apply it rationally to everything else. The only time this doesn't work is when someone lacks that crumb of empathy. But if you can at least get someone to say "Yeah it's wrong to hang a dog by a tree and set it on fire for fun and film it" - then you're away.
Yeah, I think we both agree with this.
You have to have an explanation of when something is right and wrong, otherwise your list is simplistic and untrue. For instance "It is wrong to kill", if taken to an absolute degree, then you can't take a wild swing with a baseball bat at the back of the head of someone who is raping your mum. To me, that's reasonable, and if it kills them, too bad. So in that instance, I would not say someone is wrong to do it. But, you can apply "it's wrong to kill..." with other stipulations, and they are absolutes.
But they're still just absolutes to you, not universally. In another culture, it might be fine to kill other people for sport. Their absolutes are different from yours. And there's nothing to objectively say that your "absolutes" are more correct than theirs. You _feel_ that they are, but your feelings don't matter. Again, it all reduces to self-interest, which is meaningless from an objective standpoint.
This really is all semantics, though, since we live by essentially the same ethical code. We just disagree about how we got to it.