No: I did not claim the 10 commandments were universal laws; I asked what was negative about them and how they didn't benefit society. Then I asserted that morality cannot be "relative" or self-defined because that way madness lies: behavior becomes undefinable in terms of its moral content because we can all then justify atrocious behavior based upon the claim that "it's my morality." I then asserted that some values, some behaviors were universal in their acceptance and rejection by the cultures of history and the world. All cultures have admired bravery, compassion, justice, love, loyalty; all cultures have rejected theft, lying, adultery, murder, betrayal as destructive things. That there are exceptional circumstances where a culture might engage in some of the negatives I've listed does not mean that the culture in general embraced those behaviors as virtuous, desirable and praiseworthy. All JBI's examples deal with exceptions that disqualify them from countering the argument I'm making.
No: my argument has been consistent. I keep trying to reword it to see if he'll understand what I'm looking for, because he (she - sorry?) keeps giving examples that contain an exceptional flaw within them - a circumstance that clearly explains the culture's support of a negative social behavior. I need a culture where the negative social behavior is viewed as good not on an exceptional basis, but as an accepted and praised cultural norm outside of special influences (religion, war, "marginalized cultural members" and such). I dare say neither of you will be able to do that.
Now there's a good example. Far better than any JBI has offered - but like the Jonestown example, it relies upon the misuse of religious belief to manipulate people. And even then, the people believed that their sacrifice did something positive for society. If their sacrifice was willing, then they believed they were contributing positively to their society; if they were sacrificed against their will, well that supports my position in that the society's members did not completely embrace the practice. You get one point for the ritual murder - but the fact that it is a part of religious ceremony taints it in my view because I'm seeking community values that are not from exceptional sources. You see, the culture didn't embrace the random murder of people by just anybody in the culture; there were specific rules about it, and it was done only by certain people, in certain ways, on certain days. It's a good example, but it's still shy of what I'm looking for.

