Doubly so when they're prison riot control officers who all look like they're clones of Byron Hadley, The Screw Everyone Hates from "Shawshank Redemption".
When a prison guard sees a crowd chanting protests, they are going to react very badly.
Get them out.
And get badges on the rest of them. Then get them out, too.
Consider that NYPD, for all of its faults, actually has the Civilian Complaint Review Board. Which provides citizens the ability to officially complain about bad behaviors of various cops.
However, review boards do not exist for all police forces. And many review boards have insufficient power to properly reprimand a specific cop who does a bad job.
We need a specific organization to police the police. FBI kinda-sorta does it (but not under this administration. Under Obama, the FBI was charged with investigating police brutality). Since the FBI's orders changes with the whims of the President, it is clear we need a long-lasting organization that provides oversight even when a Republican is in office.
That would require a constitutional amendment, right?
Its actually relatively easy to change the structure of the executive branch. An executive order would do, but each President can overturn executive orders as they get elected.
So it needs to be an Act of Congress if we want the organization to last between presidential terms. Of course, a future act of Congress could wipe it out, but that seems like a hard sell if we ensure that Americans remember the lessons from today's unrest.