No, it wasn't the fashion police (though someone shoulda put in a 911 on that mess!) ... When Blac Chyna goes to Barney's, she causes a ruckus! The police were called after a paparazzo apparently got a bit too close to Chyna and her security guard tackled him to the ground! Then the cops were called and Chyna skirted away in her new Ferrari, while her assistant and friend followed in her pink Range Rover Sport.

Still, Chyna was practically oblivious to it all but we're told the pap got some pretty serious treatment by the police and was scared when he was shaken up when he was released.

That'll teach him to step to Chyna! Back off, b*tches!