You are on a panel that will decide the officer's fate. Here is the city of Baltimore UOF policy. Apply it to what you saw and make your determination as to whether or not the actions were consistent with policy.
https://www.baltimorepolice.org/1115-use-forceThis is the only thing that would concern me:
"12. Retaliatory Force. Members are prohibited from using force
against persons engaged in First
Amendment protected activities or to punish persons for fleeing, resisting arrest or assaulting a
member,
or for any other reason (See Policy 804, First Amendment Protected Activity)."
I never would have considered rioting, looting, and murder as protected by the First, but seems some can make that ridiculous leap.