Forget about who's right and who's wrong about minutia, technicalities, and morality. If they don't understand what's so important about how they treat others, then they're missing one of the main essential pieces in any and all topics of discussion on this planet. If they're missing that, then they're not going to be able to complete any puzzle they're presented with. They may think they've completed it when they've found some kind of resolution, or made something work, but they haven't, they've just made an incomplete model that will eventually fall apart or cause other problems. They're missing the most important piece: the reason the puzzle exists in the first place. That reason is the surface that's needed to construct the puzzle on. Don't argue with them when they say 'One doesn't need a surface to construct a puzzle'; they're telling you that they don't understand what you're talking about, and probably never will.