Why didn’t Michigan State Police troopers intervene during massive brawl in Greektown Casino?

A brawl captured on camera inside Greektown Casino is raising questions about the response from police. Why did troopers hang back instead of trying to break up the fight? Even some bystanders were shocked to see the hands-off approach as the fighting grew more violent. Michigan State Police said there were good reasons for those troopers not to intervene. Video shows the fight inside the food court area inside the Greektown Casino as a woman was thrown to the floor and a chair was thrown. Two Michigan State Police troopers were at the scene, but held back.