In the sovereign citizen cases they are talking about, the typical case is that the vehicle is not registered/doesn't have plates and the driver refuses to identify themselves. They only barely lower the window if at all. They usually go back and forth a few times until the police tell them they are under arrest for multiple reasons relating to driving without a license and failure to identify.

The glass breaking happens after multiple offices have arrived for backup as the person usually gets dragged from the car screaming. The videos are extremely entertaining to watch.

The combination of unregistered vehicle, failure to prove the driver has a license, and the drivers insisting they should be allowed to drive away is absolutely a combination where arrest is legal.