Am I supposed to be amazed? While not all LEO's are bad - this stuff goes on all the time - from the smallest PD to the largest, and it gives all cops a bad name.
A real dirty shame, as I believe that most people want to become a cop so that they can do some good in this rotton world.
Your point is something many people miss. Most people start off going into Law Enforcement or Politics because they want to MAKE A DIFFERENCE or IMPROVE THINGS.
Once they get into that 'world' for awhile they find out how nasty that world is. They find that only the people with the strongest willpower and fortitude can do 'the right thing', and sooner or later those people either cave in or get killed.
No one starts off wanting to be a BAD COP, it just happens along the way.