Slavery in Ancient Greece was ubiquitous. Let's assume every citizen of Athens, for example, accepted the legitimacy of slavery. Would that mean there were no morally good Athenians?
Sure, but the fact there's a difference doesn't mean that a person's actions tell us nothing about their character, and there might well be a certain class of actions that tells us everything we need to conclude they've a bad character.
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.