Custodians? Really?

Are there any competent police officers around? We've had failed attempts to fit up the innocent for crimes for which there is no evidence, the police ignoring the guilty for decades or on political correctness grounds, bungling police officers killing members of the public, police farces ignoring crimes in order to fiddle their statistics, and using "the savage cuts" as an excuse for sheer lack of will to do the job they are paid to do. It's getting to the stage where we need to start asking if there is any point at all in having coppers, if this is all they can do.