A moral fact exists when, say, Jones performs an action that has the property of being wrong, and this action is wrong regardless of what anybody thinks.
A moral fact F exists only if there is at least one property p, such that p is exemplified (or realized) by some event e, p is a moral property, and e's exemplification of p occurs independently of any relation p bears to human cognitive systems.
Is there anybody here who holds the belief that moral facts do not exist? If you do, why?
Rude, offensive, irrational jackass.