Ahmaud Arbery's past actions are utterly irrelevant, for this simple reason-even if those past actions had actually been problematic or cause for suspicion-none of them were- the men who killed him didn't know his name and would have had no way of knowing anything he'd done before the day he crossed paths with them. Information the killers would not even have had cannot possibly be used as a justification for the decision by the killers to kill him-a killing which was in all liklihood premeditated, given that they had an accomplice standing by to film the killing.