Police corruption, world wide is the same; it stems from financial greed. It's as old as prostitution which extends from the ancients. What we all see in motion pictures portrays how and what is going on today as in years past, only thing is that it's more sophisticated now days.
Dirty money touches everybody from the top on down; it's the, "catch me if you can," game. That being said, depends on what side of the fence one stands. This corruption will continue long after we today are  gone. Only God can clear this mess up.