I remember seeing this video a year or so ago and thought.. WOW.. Thats abit much however it was a number of plain clothes officers carrying out a hard stop on a stolen motor vehicle with 4 passengers, all known to the police as weapons carries and warning signals for firearms etc. They had been following the car and were stopped in heavy traffic.
Clearly there wasnt enough to charge any officer for any type of violent crime given the circumstances however I think its fair to say that maybe a better style of hard stop should have been utilised and hence why 6 officers were disciplined for it.
I dont see any cover up or “looking after their own” as the OP has suggested.