This has been going on unofficially, for decades.
It all started with the “zero tolerance” policies for fighting or violence. In the old days, the instigator would be punished and the passive participant who defended himself would get a quick lecture and be sent back to class.
Now, they won’t objectively punish the person who initiated the fisticuffs. Even the defender is equally punished.
This was an end run on the “unequal” statistics showing minorities to be more violent.
if the defender ‘wins’ they get harder treatment than the attacker.