I like to sum up the standard of morality with one word:
Compromise.

In any situation when morals are either forced or secretly made into law (even perhaps a political coup), then those morals would be wrong.

To reach a compromise, over 6 billion people's ideas would have to be considered all at once, and then once the votes have been counted, they'd have to all come together again to smooth it out. It would be nearly impossible to do, so that's why we have elected officials. But it doesn't carry over well. So, either way it's never going to work until someone devises an ultimate plan to get all those votes from everyone.

Until that happens, do anything you want. Free for all. All laws of the past and present are inherently unjust and unfair, they are purely arbitrary and irrelevant. Chaos reigns supreme.