Probably because we expect a higher standard or something from people we pay to uphold the law.
OK, but what is it, from your personal experiences that you expect? Not necessarily "a friend of mine and the police...." of " I know someone when the police ..." ( sincere Q by the way )
I dont think its ever going to be possible that you can completely eliminate the possibility of the occasional wrong doing. Across all aspects of life, there are going to be people that buck the trend so to speak.
( Not really sure how best to put this ... I'm talking about bad integrity, not necessarily laziness )
I would say though, that the holes in the net for catching wrong doing within the Police are very small. Just about everything that we do is recorded in some auditable manner these days. I'm tracked by GPS, radio and phone calls recorded, my reports linked against calls I go to, stop searches I do are recorded. Station charge bars and cell areas are full of cameras and have extremely sensitive microphones. Just about every action I do on the computers is recorded and can reviewed if required. Complaints from the public are investigated and will look at the above areas. Nowadays, its just not worth trying to cheat the system on my part ... sometime further down the line, you get found out.
And some people do get caught, but its a very small minority.
Which is why, as I said before, its disappointing that those that are caught, are perceived as being what like the majority is.
