911: What is your emergency?
Caller: There is a riot at the ballpark. There is a gang and, I'm not sure, but they may have weapons.
Key word: weapons.
There will be an armed response by any officer worth their salt.
So, one officer is in trouble because he actually had the gall to move to stop an assault in progress? If I'm the players, I'm beating on the city/county/state D.A./A.G. or whichever dept. is responsible for the public demanding, at least, an investigation especially if this involves members of a known gang. BTW, the next office to be visited would be the local newspaper.