Really? So your state doesn't have felony facilitation, criminal mischief, mayhem, riotous action public alarm, participating in mob activity, conspiracy, entry for criminal purposes, wanton destruction, malicious destruction, or theft by intimidation statutes?
A first year assistant DA with three suspect statements and this video could come up with 25 years of stackable charges in his sleep.
Plus any cop should easily be able to surmise how many outstanding felony warrants that would probably be come across by detaining members of this mob, plus the myriad probation and parole violations likely.
And without concrete video evidence or catching the perps in the act, how would a cop know anything about outstanding warrants? Those are secondary concerns anyway.
The ONLY thing I can see is a possible robbery charge because of the sheer number of suspects participating in the act. The worker could say that he was too afraid to intercede due to the amount of suspects.