Hey, you can't pin corrupt laws on the cops...that's YOUR responsibility. You certainly can't be suggesting they pick and choose which laws to enforce?
As for "corrupt methods", if it's an individual officer (or small group), doing this outside of department policy, they should be fired and possibly prosecuted. However, if they are doing what they are told the problem is not the cop, it's management. Right, tw?
In the case of corrupt leadership, it's once again your responsibility to correct that......they work for you.