[lepton]

The very first thing a GI in Germany learned was not to give the Polizei any Scheiss.

I recall it not being uncommon to see them wandering around with Machine Pistols. ...I even got to watch the police take blood from an uncooperative drunk driver...through his nose, with a steel collection bowl, after bouncing his face off the police car.

[Lonesome in Massachussets]

Actually, I saw Swedish Kops doing approximately the same thing to a native Swede guy about 25 years old. Four coppers were dragging him along the ground while a couple of others bludgeoned him with truncheons. European cops, in the day, didn't really worry about community relations.