As I said, the Video that I looked at was unclear. I could not see exactly what they were doing. And I did NOT see police break a window. I don’t have great eyesight so dial it back ok?
A vehicle left unattended in that area would need quick and thorough “vetting” as well as demobilization.
Officer on the driver-side checks for keys in ignition.
Officer on the passenger-side clear away glass for further inspection.
The last thing these folks want is to have a car bomb go off in the middle of their advancing phalanx. Or, some rifleman in the trunk to pop up after they pass and start picking them off from behind.
Car had no business being their.
I think it could also be that antifa purchased police uniforms to better make their way around town, delivering supplies and vandalizing.