There's something unsaid here that needs to be looked at further by the voters of the city. An ex-cop in good standing usually carries a retired shield or ID and would never step in between an officer and a frisk (as they wouldn't want a fellow cop getting hurt). So why did Williams get between the cops and the suspects to the point where the officers detained him so they could investigate the situation?
Putting myself in this situation, it stinks.
A beat cop wouldn't be in that position, so a four-star law enforcement executive should never have been in the position to be detained in the first place.