Ozzy/Rob Zombie fans bamboozled

Is this legal? Seems a bit odd to me…

Ozzy fans were duped into attending a pre-party where they were promptly escorted off to jail. Granted these people had ditched court, but it seems like these Fargo cops were thinking they were in the movie or something. Plus, Ozzy and Rob Zombie couldn’t have been in cahoots on this, right?