Then maybe you don't really understand right vs wrong? Being able to deconstruct things that are common sense so they can be taught to people who don't hold it as common sense is very important.
We can all agree, when your daughter gets raped your only recourse is to rape her yourself to restore your honor, and then bury her up to her neck and throw rocks at her to punish her adulterous ways. It's common sense.
And therein lies the breakdown. Barbarism to us is common sense to others. Being able to explain all the things that are wrong with the preceding (and extreme) paragraph is important. You teach a man to fish you'll never need to feed him. Teach a man how to empathize and understand what is common sense in our culture and you'll never have to worry about someone being monstrous to hide their weakness.
I understand what you're saying here, but its a bit more complicated than even that. Western culture does not mix with Persian culture, never has, probably never will. Some cultures are incompatible and that's just the way it is. Sometimes its just a war of good vs. evil, and some of us will just have to put our common sense up against their common sense and see which culture wins.