Since the US Marshalls are feds, I have no doubt that Comrade Xiden's Dept of Wokeness...err...Justice gave this case a colonoscopy.
Remember, Michael Brown's accomplice was the one that started the whole "Hands Up, Don't Shoot" 🐃💩 lie.
Some were Marshalls, some were deputized locals.
But, you’re right about the DOJ investigating.