OTS:
Lived in Germany for ten years never met a bad copper always Polite and Fair 
I lived in Germany for 15 years and can fully endorse what you say OTS. In fact I have a very good friend who is quite a senior policeman in Frankfurt (am Main).
The difference is that the German police, as a fundamental principle, see themselves as a service, intended to prevent crime, rather than cash in once a crime has been committed. That’s not to say the German police won’t go in mob handed when they see crime or a disturbance of the peace that has gone beyond a warning.
This is of course the diametric opposite of the way the UK police carry out their duties. Here, everyday policing is not about prevention, which is not a profitable exercise, but about detection, which is.
It’s why you’ll generally SEE German police cars on motorway bridges, effectively telling speeders that the police are observing good driving discipline. Anyone offending after seeing a German police car, can expect to be dealt with to the letter of the law.
Over here, you’ll find the police hiding up slip roads, with hand held speed cameras, effectively attempting to cash in on speeding motorists. And strangely enough when you ask a UK copper, why it’s unsafe to exceed the speed limit in the UK, invariably you’ll get the absurd response; “Because speed kills!” No one has ever told me at what speed you die? Or why it’s safe to do 160kp/h on an Autobahn in Germany, but unsafe to drive, with the same car, at 100mp/h in this one.
Yes, I have recently had a confrontation with a remarkably belligerent, jobsworth traffic cop, with nothing better to do than speed down a dual carriageway to book me for exceeding the speed limit whilst overtaking a van. Yes I was breaking the law, but there was no discretion or common sense judgement possible with this particular numbskull, despite my actions actually enhancing road safety, by reducing the amount of time I was in a possibly dangerous position on the road (beside another vehicle traveling at relatively high speed) to the minimum.
I used to give the UK police service the benefit of the doubt, and this guy will never know how much damage he did to my good will towards the police service. Now, I can well understand the increasingly common perception of us and them!