John the Baptist ordered soldiers to 'Rob no one by violence nor by false accusation, and be content with your wages' (Luke 3:14). That is along the lines of 'Masters, forbear threatening, knowing that He who is both their Master and yours is in Heaven, and that there is no partiality with Him' (Ephesians 6:9).
One has to realize that cops are officials of the United States Government regardless of them not having federal nor state domains.
Therefore they are, according to Romans chapter 13, 'ministers of God' who are 'instituted by God'. Resisting such is 'resisting who God appointed' and so resisting will cause 'judgment' (from Whoever and/or whoever judges, sooner or later).
Though some police are injust to varying degrees, all of them have a responsibility to protect all law-abiding and frequently-nonarmed citizens within their jurisdiction. If one - in all fairness, sensibility, and serious practicality - does not feel that the police will come quickly enough, will cite the continuously-oppressed with overtly bothering them repeatedly with what unfair cops misconstrue as "nuisance calls," and/or that law enforcement and their courts will not effect or not effect soon enough the severity of justice required for dire offenses perpetrated.....then the option of not only possessing but also freely using weapons of one's own choice (not merely firearms) is guaranteed and protected by the Second Amendment of the United States Constitution.
With that in mind, it is obvious that cops (even some who are pompous bullyboys and evil to varying degrees, thus destined for damnation like the majority on the broad and evil road to destruction) are under the ultimate authority of God the Creator. In addition, there is a temporal chain of command such local government officials (be they police or sheriffs) are subject to and constrained by (e.g. the mayor, city hall council members, the governor, the President, anti-criminal lawyers, courts, judges, the media, clergy and parishioners of the community, public and parochial school personnel, business leaders and employees, anonymous tipsters, the state patrol, federal marshals, the F.B.I., National Guard, Marines, etc.). As Solomon noted in the Old-Testament book of Ecclesiastes: "If you see injustice done, do not be surprised at the matter. For there are authorities over them, and there are higher authorities than even them."
Also, remember that Old-Testament patriarch David (who himself was the Lord's anointed per I Samuel 16:13) would NOT murder previously-anointed King Saul when Davy had the many chances to and seemingly deserved to murder or should have murdered (not simply killed) Saul. But David himself did not want to 'harm the Lord's anointed' (I Samuel 24:6,10 plus 26:9,11,16,23)...but instead left retribution up to God who allowed Saul to commit suicide while Saul was being murdered by an Amalekite (II Samuel 1:14-16) in battle.
Even Saint Paul did NOT (or perhaps COULD NOT, under the circumstances) retaliate himself against Alexander the Coppersmith, but rather pronounced a God-enforced prophetic curse pertaining to Alexander (II Timothy 4:14-15).
And we all remember (or should) what happens when a genuine, authentic man of God curses someone in the Name of the LORD, or gets Divine assistance, as - for example - recorded in:
Against such Providence there is NO escape for ANY bad cop or whoever - be they American, European, Nazi, Communist, Islamic Jihad/Hezbollah/al-Qaeda, or anti-Iraq coalition crusader in military garb. The worst of Satan's law-enforcement tyranny is NO match for our Vengeance-Is-Mine LORD and - concordantly - HIS commissioned elect saints with or without uniforms. (Job 33-41, Psalm 37, Proverbs 10-30)
One might choose to become a Stephen-like martyr, a protected 'prisoner' like Paul in Rome, or a secluded exile like John on Patmos, but 'the meek shall inherit the earth' (Matthew 5:5) as THE TRUE BONAFIDE 'peacemakers are the sons of God' (Matthew 5:9).
Some cultic false-prophet-type preachers babble and blatter that Jesus (as God) ordering us to Be perfect as your Heavenly Father is perfect makes us nervous, causes us to sin, and disobey the Law (like a harsh impatient mother hovering over her poor-reader child ready to verbally pounce on the kid for the slightest mistake). Christ's words still stand - despite the stupidly and dishonest lies of religious heretics.
If so, WHAT is the POINT of even TRYING to get BETTER - if being imperfect and mediocre is GOOD ENOUGH?
SOLICITATION FOR and ATTEMPT AT perfection need not be accompanied with mean-spirited impatience, malice, jealousy, pride, arrogance, cruel and injust sarcasm, and rudeness!
The 'doctrine of eternal punishment created' was OBVIOUSLY created by GOD Himself in HIS own Bible - according to such [EASILY-understood, EASILY-interpreted, PLAIN and CLEAR] Scriptural references as: